380 system32 Files I Do Not Delete, By Feature

[elboriyorker]

With some exceptions, I have listed here the 380 system32 Files I Do Not Delete by feature. Sometimes knowing how files all fit together can very helpful.

There are undoubtedly other even more important reasons for not deleting some of these files, as many files have multiple uses. What I have here are the first good reasons I bumped into that made me decide why I don't want to delete these particular files.

Some of these files are essential to the operation of Windows. Other files belong to optional features I choose to keep with my Windows installation.

Certainly I could further reduce the size of my XP installation. Simply by removing many of these files.

I could remove Internet Explorer. I could remove Windows Media Player 10. I could remove Windows Update. I could even remove some of the third-party programs I have installed.

But wouldn't I then be missing the point of all that goes before this? That point being to have Windows XP setup and function the way I want.

I like Internet Explorer. I like using Windows Media Player 10. I like having Windows Updates installed. I like my third-party programs, for that matter.

If you chose to further reduce your Windows installation, that's up to you. You can pick and choose from this list additional files and features that can be deleted.


Needed by Outlook Express

acctres.dll.....Microsoft Internet Account Manager Resources

inetcomm.dll...(Microsoft Internet Messaging API). Without this file Outlook Express will not open. You will receive this popop message when you click on the Outlook Express shortcut: "Outlook Express could not be started because MSOE.DLL could not be found. Outlook Express may not be installed correctly."

Additionally, inetcomm.dll is needed in order to save a Webpage as an offline Webpage with an .mht extension.

inetres.dll.....(Microsoft Internet Messaging API Resources). Without this file Outlook Express will not open. You will receive this popop message when you click on the Outlook Express shortcut: "Outlook Express could not be started because MSOERES.DLL could not be found. Outlook Express may not be installed correctly."

Additionally, inetres.dll is needed in order to save a Webpage as an offline Webpage with an .mht extension.

mapistub.dll....(Extended MAPI 1.0 for Windows NT). Outlook Express needs this file when you choose for Outlook Express to be your default mail provider.

mshtmler.dll....(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ HTML Editing Component's Resource DLL). Needed to insert a picture in E-mail
msident.dll.....Microsoft Identity Manager
msidntld.dll....Microsoft Identity Manager
MSOEACCT.DLL....Microsoft Internet Account Manager
MSOERT2.DLL.....Microsoft Outlook Express RT Lib

sendmail.dll....Send Mail

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Needed by NVDVD Player

acelpdec.ax.....ACELP.net Audio Decoder

d3d8thk.dll.....Microsoft Direct3D OS Thunk Layer
d3d9.dll........Microsoft Direct3D
d3dim700.dll....Microsoft Direct3D
devenum.dll.....Device enumeration
ddraw.dll.......Microsoft DirectDraw

ksuser.dll......User CSA Library

msdmo.dll.......DMO Runtime

qdvd.dll........DirectShow DVD Playback Runtime


These files are installed by NVDVD Player:

DolbyHph.dll....Dolby Headphone Engine

license.955200..When I deleted this seemingly harmless file, I started getting a Memory Error Popup, showing up as an Application Error in the Event Viewer, just as I would click to restart my computer. Even when I put the file back in the system32 folder, the errors would continue.

msxml3a.dll.....XML Resources

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Needed by Registry Editor

aclui.dll.......Security Descriptor Editor

clb.dll.........Column List Box

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Needed by Event Viewer

ACTIVEDS.DLL....(ADs Router Layer DLL). Needed to open and view Event Viewer. Also needed by PerfeckDisk.
ADSLDPC.DLL.....(ADs LDAP Provider C DLL). Needed to open and view Event Viewer. Also needed by PerfeckDisk.

ATL.DLL ........ATL Module for Windows XP (Unicode). Needed to enter Event Viewer console. Also needed to enter System Properties without receiving an error.

ELS.DLL.........Event Viewer Snapin

EVENTLOG.DLL....(Event Logging Service). Also, if you delete this file, it will take a very long time for your system to reboot to Windows, but Windows will eventually open.

EVENTVWR.EXE....(Event Viewer Snapin Launcher). The executable for the Event Viewer.
eventvwr.msc....Event Viewer Microsoft Management Console

MMC.EXE.........Microsoft Management Console
MSXML3.DLL .....(MSXML 3.0 SP 5). Needed to enter Event Viewer console. Also needed to enter and use Device Manager.
MSXML3R.DLL.....(XML Resources). Needed to enter Event Viewer console. Also needed to enter and use Device Manager.

netevent.dll....Net Event Handler

riched20.dll....(Rich Text Edit Control, v3.0). Needed to read Information and Error Messages (Event Properties) in Event Viewer. Also needed by Kazaa Lite.

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Internet Explorer files I do not delete

I personally like having Internet Explorer for my browser; however, as with everything else on my system, I want eliminated any unnecessary files. Listed here are necessary Internet Explorer files I do not delete.

(I do however delete a little over two thirds of the Internet Explorer files that come with my XP installation. See PART 9 for those Internet Explorer files I do delete.)

actxprxy.dll....(ActiveX Interface Marshaling Library). Essential for Internet Explorer

BROWSELC.DLL....(Shell Browser UI Library). Important for IE Toolbar Bar. Toolbar will look messed up without it, and you cannot right-click access "Customize" without it.

BROWSEUI.DLL...(Shell Browser UI Library). Needed just to be able to boot to Windows

COMCTL32.DLL...(Common Controls Library). Needed just to be able to boot to Windows

DHCPCSVC.DLL....(DHCP Client Service). Needed for Internet connectivity
dispex.dll......(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ DispEx). Needed to watch Yahoo Movie Trailers

iepeers.dll....(Internet Explorer Peer Objects). Needed to watch Yahoo Movie Trailers
imgutil.dll.....(IE plugin image decoder support DLL). Needed so you don't see those little red x's in place of some images
inetcplc.dll....(Internet Control Panel). Needed to access Internet Options

JSCRIPT.DLL.....(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ JScript). Needed by Windows Update

MLANG.DLL.......(Multi Language Support DLL). Essential for Internet Explorer
mshtml.dll......Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ HTML Viewer

MSHTML.TLB.....(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ MSHTML Typelib). Needed to be able to save a Webpage as an offline Webpage with a .mht extension

MSHTMLED.DLL....(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ HTML Editing Component). This file gives you the ability to edit HTML. An example of that would be when you edit one of your posts on some forums. You wouldn't be able to do that without this file.

mshtmler.dll....(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ HTML Editing Component's Resource DLL). Needed to insert a picture in E-mail using Outlook Express

msident.dll.....(Microsoft Identity Manager). Needed by Outlook Express
msls31.dll......(Microsoft Line Services library file). Essential for Internet Explorer
MSWSOCK.DLL.....(Microsoft Windows Sockets 2.0 Service Provider). Essential for Internet Explorer

occache.dll.....(Object Control Viewer). Needed to view icon for ActiveX objects in Downloaded Program Files. Otherwise, the ActiveX objects show up as .ini files.

OLEAUT32.DLL....Needed just to be able to boot to Windows

pngfilt.dll.....(IE PNG plugin image decoder). Needed so you don't see those little red x's in place of some images

sendmail.dll....(Send Mail). Needed by Outlook Express

SHDOCLC.DLL.....(Shell Doc Object and Control Library). Needed to be able to access right-click options while right-clicking on a Webpage

SHDOCVW.DLL.....(Shell Doc Object and Control Library). Needed just to be able to boot to Windows

urlmon.dll......(OLE32 Extensions for Win32). Essential for Internet Explorer

vbscript.dll....(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ VBScript). Needed by Yahoo Chat

WININET.DLL.....(Internet Extensions for Win32). Needed just to be able to boot to Windows
WSHTCPIP.DLL....(Windows Sockets Helper DLL). Essential for Internet Explorer

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Needed by PerfectDisk

ACTIVEDS.DLL....(ADs Router Layer DLL). Also needed to open and view Event Viewer.
ADSLDPC.DLL.....(ADs LDAP Provider C DLL). Also needed to open and view Event Viewer

MSI.DLL.........Windows Installer

PDBoot.exe......PerfectDisk Boot Time Defragmentation

PDBootState.....Temp file created by PerfectDisk after a Boot Time Defrag. It can be deleted safely. It will return when you do another Boot Time Defrag.

riched32.dll....(Wrapper Dll for Richedit 1.0). Without the riched32.dll file present, when opening PerfectDisk program, I receive this error: "Failed to load "Riched32.dll" library. However, PerfectDisk will load once I click OK on the error.

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Files needed just to be able to boot to Windows

ADVAPI32.DLL....(Advanced Windows 32 Base API)...The avicap32.dll is used by your computer when capturing video from cameras (e.g. webcams) to store the resulting video as AVI format. If you are recording video or using a webcam for video conferencing, you should not stop this process.

AUTHZ.DLL .......Authorization Framework

AUTOCHK.EXE.....(Auto Check Disk). Launches automatically during Windows XP bootup if a volume is marked as dirty (has bad clusters, has error blocks, or is otherwise damaged).

BASESRV.DLL.....Windows NT BASE API Server DLL
bootvid.dll.....VGA Boot Driver
BROWSEUI.DLL....Shell Browser UI Library

c_437.nls.......
c_1252.nls......
COMCTL32.DLL....Common Controls Library
COMDLG32.DLL....Common Dialogs DLL
CRYPT32.DLL.....Crypto API32
CRYPTDLL.DLL....Cryptography Manager
CRYPTUI.DLL.....Microsoft Trust UI Provider
CSRSRV.DLL......Client Server Runtime Process

CSRSS.EXE.......(Client-Server Runtime Server Subsystem). Used to maintain the Win32 system environment console and other essential functions.

ctype.nls.......

DNSAPI.DLL......DNS Client API DLL
dpcdll.dll......Dpcdll Module

duser.dll.......(Windows DirectUser Engine). Needed by Add/Remove Module. Also, if you delete this file, Windows will display the classic logoff and logon prompts; however, you can reboot to Windows without it.

EVENTLOG.DLL....(Event Logging Service). If you delete this file, it will take a very long time for your system to reboot to Windows, but Windows will eventually open. It is also needed by Event Viewer.

GDI32.DLL.......GDI Client DLL

hal.dll.........(Hardware Abstraction Layer). A file that hides hardware complexities from Windows applications.

IMAGEHLP.DLL....Windows NT Image Helper
IPHLPAPI.DLL....IP Helper API

kbdus.dll.......(United States Keyboard Layout). You may need a different KBD*.DLL depending upon your system. (See PART 7 of Guide.)

kdcom.dll.......Kernel Debugger HW Extension DLL
kernel32.dll....Windows NT BASE API Client DLL

l_intl.nls......
locale.nls......

LOGONUI.EXE.....(Windows Logon User Interface). The user interface that appears when Windows XP first starts. If you delete this file, Windows will display the classic logoff and logon prompts; however, you can reboot to Windows without it.

LSASRV.DLL......LSA Server DLL
LSASS.EXE.......(LSA Security Service). The Local Security Authority server process.

MPR.DLL.........Multiple Provider Router DLL
MSACM32.dll.....Microsoft ACM Audio Filter
MSASN1.DLL......ASN.1 Runtime APIs
MSGINA.DLL......(Windows NT Logon GINA DLL). Needed to load Logon User Interface

MSIMG32.DLL.....(GDIEXT Client DLL). Without this file you will need to click on OK to a Log On Message to enter Windows upon rebooting

MSPRIVS.DLL.....Microsoft Privilege Translations
MSV1_0.DLL......Microsoft Authentication Package v1.0
MSVCP60.DLL.....Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ C++ Runtime Library
MSVCRT.DLL......Windows NT CRT DLL

NCOBJAPI.DLL....
NDDEAPI.DLL.....Network DDE Share Management APIs
NETAPI32.DLL....Net Win32 API DLL
NTDLL.DLL.......NT Layer DLL

NTDSAPI.DLL.....(NT5DS Library) The library file, ntdsapi.dll, is used by windows when working with Directory Services. Directory Services is a mechanism employed by windows for easily locating devices and resources on a network.

NTMARTA.DLL.....(Windows NT MARTA provider). I can reboot to Windows without this file, but my Windows Style reverts to Default Blue. I usually have it set to Silver, so without the NTMARTA.DLL file present, after rebooting, I need to change my Windows Style back to Silver.

NTOSKRNL.EXE....(NT Kernel & System). Windows XP operating system Kernel

nv4_disp.dll....(NVIDIA Compatible Windows 2000 Display driver). Essential for Display Adapter. Needed just to be able to reboot to Windows.

ODBC32.DLL......Microsoft Data Access - ODBC Driver Manager
ODBCINT.DLL.....Microsoft Data Access - ODBC Resources

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oleacc.dll......Active Accessibility Core Component
oleaccrc.dll....Active Accessibility Resource DLL

The above two files are both needed to avoid seeing these four Classic Logon prompts:
1.) (Upon rebooting to Windows) "Log On to Windows" ...Then you'll need to either click on OK, or if you use a password, type it in, and then click OK.
2.) (And then) "Loading your personal settings"
3.) (When restarting from your Desktop) "Please wait... Windows in saving your settings"
4.) (When restarting from your Desktop) "Windows is shutting down"

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OLE32.DLL.......Microsoft OLE for Windows
OLEAUT32.DLL....

PROFMAP.DLL.....Userenv
PSAPI.DLL.......Process Status Helper

REGAPI.DLL......Registry Configuration API
RPCRT4.DLL .....Remote Procedure Call Runtime
RPCSS.DLL ......Distributed COM Services

RSAENH.DLL......(Microsoft Enhanced Cryptographic Provider). The RSAENH.DLL is needed to accurately check license for Windows.

SAMLIB.DLL......SAM Library DLL
SAMSRV.DLL......SAM Server DLL
SCESRV.DLL......Windows Security Configuration Editor Engine
SECUR32.DLL.....Security Support Provider Interface
services.exe....(Services and Controller app). Used by Windows XP to manage services.
SETUPAPI.DLL....Windows Setup API

SFC_OS.DLL......(Windows File Protection). You can reboot to Windows without this file, but not without first having to click OK on an error popup that appears when entering Windows that tells you that SFC_OS.DLL cannot be found.

SHDOCVW.DLL.....Shell Doc Object and Control Library
SHELL32.DLL.....Windows Shell Common Dll

shgina.dll......(Windows Shell User Logon). This file is needed just to restart your computer from your Desktop. Further, once you delete or move it from the system32 folder--even if you put it back--you still won't be able to restart from your Desktop.

SHLWAPI.DLL.....Shell Light-weight Utility Library
shsvcs.dll......Windows Shell Services Dll

SMSS.EXE........(Windows NT Session Manager). Session manager used to establish the Windows XP environment during bootup.

sortkey.nls.....
sorttbls.nls....
SVCHOST.EXE.....Generic Host Process for Win32 Services
SXS.DLL.........Fusion 2.5

umpnpmgr.dll....User-mode Plug-and-Play Service
unicode.nls.....
user32.dll......Windows XP USER API Client DLL
userenv.dll.....Userenv
USERINIT.EXE....(User Initialization). Used to establish the operating environment for a user after logon.
UXTHEME.DLL.....Microsoft UxTheme Library

VERSION.DLL.....Version Checking and File Installation Libraries

WATCHDOG.SYS....Watchdog Driver
WIN32K.SYS......Multi-User Win32 Driver
WININET.DLL.....Internet Extensions for Win32
WINLOGON.EXE....Windows NT Logon Application
WINSCARD.DLL....Microsoft Smart Card API

WINSPOOL.DRV....(Windows Spooler Driver). Important: If in PART 5 you choose to delete the system folder and its files (C:\WINDOWS\system), at least keep its "WINSPOOL.DRV" file. Or, at least keep the "WINSPOOL.DRV" file that is in the system32 folder (C:\WINDOWS\system32). Just be sure to keep one of them, or you may not be able to reboot to Windows.

WINSRV.DLL......Windows Server DLL
WINSTA.DLL......Winstation Library
WINTRUST.DLL....Microsoft Trust Verification APIs
WLDAP32.DLL.....Win32 LDAP API DLL
WOW32.DLL.......32-bit WOW Subsystem Library
wpa.dbl.........Windows Product Activation (WPA).
WS2_32.DLL......Windows Socket 2.0 32-Bit DLL
WS2HELP.DLL.....Windows Socket 2.0 Helper for Windows NT

XPSP2RES.DLL....Service Pack 2 Messages

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Needed by System Properties and Device Manager

ADVPACK.DLL.....(Advpack Library). The library file advpack.dll is required for windows to operate. It is used by windows to verify .inf files. If advpack.dll is unavailable, windows will not function correctly. Needed to enter System Properties by right-clicking on My Computer and selecting Properties without receiving this error: "This application has failed to start because ADVPACK.dll was not found. Re-installing the application may fix this." However, System Properties does open after clicking OK on the error popup...even without the file present.

ATL.DLL ........ATL Module for Windows XP (Unicode). Needed to enter System Properties without receiving an error. Also needed to enter Event Viewer console.

CABINET.DLL.....(MicrosoftÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ Cabinet File API). Needed to enter System Properties by right-clicking on My Computer and selecting Properties without receiving this error: "This application has failed to start because Cabinet.dll was not found. Re-installing the application may fix this." However, System Properties does open after clicking OK on the error popup...even without the file present.

certcli.dll.....(MicrosoftÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ Certificate Services Client). Needed to display Properties of devices in Device Manager
CREDUI.DLL......Credential Manager User Interface

devmgmt.msc.....(Computer Management Console). Needed to access Hardware Device Manager
devmgr.dll......(Device Manager MMC Snapin). Needed to access Hardware Device Manager
dmocx.dll.......(TreeView OCX). Needed to access Hardware Device Manager

ESENT.DLL.......(Server Database Storage Engine). Needed to enter System Properties by right-clicking on My Computer and selecting Properties without receiving this error: "This application has failed to start because ESENT.dll was not found. Re-installing the application may fix this." However, System Properties does open after clicking OK on the error popup...even without the file present.

imm32.dll ......(Windows XP IMM32 API Client DLL). Needed to enter System Properties by right-clicking on My Computer and selecting Properties without receiving this error: "This application has failed to start because IMM32.dll was not found. Re-installing the application may fix this." ...And System Properties will not open without it.

MSPATCHA.DLL....(MicrosoftÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ Patch Engine). Needed to enter System Properties by right-clicking on My Computer and selecting Properties without receiving this error: "This application has failed to start because mspatcha.dll was not found. Re-installing the application may fix this." However, System Properties will open after clicking OK on the error message...even without the file present.

msports.dll.....(Ports Class Installer). Needed to display fully Communications Port (Com1) and Printer Port (LPT1) Properties in Device Manager

MSXML3.DLL .....(MSXML 3.0 SP 5). Needed to enter and use Device Manager. Also needed to enter Event Viewer console.
MSXML3R.DLL.....(XML Resources). Needed to enter and use Device Manager. Also needed to enter Event Viewer console.

netid.dll.......(System Control Panel Applet; Network ID Page). Needed to see Computer Name tab in System Properties

POWRPROF.DLL....(Power Profile Helper DLL). Without this file present, you will receive an error when opening Properties for your Keyboard in Device Manager. However, the Properties for Keyboard will eventually open...even without the file present.

SFC.DLL.........(Windows File Protection). Needed to enter System Properties without recieving an error

SHFOLDER.DLL....(Shell Folder Service). Needed to enter System Properties by right-clicking on My Computer and selecting Properties without receiving this error: "This application has failed to start because SHFOLDER.dll was not found. Re-installing the application may fix this." However, System Properties will open after clicking OK on the error message...even without this file present.

stdole2.tlb.....(Microsoft OLE 3.50 for Windows NTÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ and Windows 95ÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Operating Systems). Needed to display Properties of devices in Device Manager

storprop.dll....(Property Pages for Storage Devices). If I delete the storprop.dll, in the Device Manager, under IDE ATA/ATAPI controllers, I cannot view the Advanced tab in Primary IDE Channel or Secondary IDE Channel.

streamci.dll....(Streaming Device Class Installer). Needed for Plug and Play Software Device Enumerator Properties under System devices in Device manager. Without it, a report error will occur in the setupapi.log, which is created in C:\WINDOWS and reports how things went when opening Device Properties in Device Manager.

usbui.dll.......(USB UI Dll). Needed to display fully USB Universal Host Controller Properties and USB Root Hub Properties in Device Manager

usp10.dll.......(Uniscribe Unicode script processor). Needed to enter System Properties by right-clicking on My Computer

WINHTTP.DLL.....(Windows HTTP Services). Needed to enter System Properties by right-clicking on My Computer and selecting Properties without receiving this error: "This application has failed to start because WINHTTP.dll was not found. Re-installing the application may fix this." However, System Properties will open after clicking OK on the error message...even without this file present.

WTSAPI32.DLL....Windows Terminal Server SDK APIs

wuaueng.dll....(Windows Update AutoUpdate Engine). When not present, I'll receive an error when trying to enter System Properties by right-clicking on My Computer.

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Control Panel Applets I Keep

appwiz.cpl......Add/Remove Programs

desk.cpl........Display Properties

hdwwiz.cpl......Add Hardware Control Panel Applet

inetcpl.cpl.....Internet Control Panel

main.cpl........Mouse Properties

mmsys.cpl.......Sound and Audio

powercfg.cpl....Power Options

sysdm.cpl.......System Properties

timedate.cpl....Time and Date Properties

wuaucpl.cpl.....Automatic Updates Control Panel

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ASYCFILT.DLL....Needed by StatBar, a third-party program I have installed

AUDIOSRV.DLL...(Windows Audio Service). Main Service file for Windows Audio. Needed to hear sound on your computer.

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Needed for Yahoo Messenger Installation

AVICAP32.dll....(AVI Capture window class). When installing Yahoo Messenger, I received this error pop-up message: "This application has failed to start because AVICAP32.dll was not found. Re-installing the application may fix this problem." However, Yahoo Messenger did finally install successfully in spite of this error message.

mapi32.dll......Extended MAPI 1.0 for Windows NT

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Needed by Plus! MP3 Audio Converter LE to convert .mp3 files to .wma files

avifil32.dll....Microsoft AVI File support library

iac25_32.ax.....IndeoÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ audio software
IMC32.ACM.......Intel Music Coder for MSACM

l3codeca.acm....(MPEG Layer-3 Audio Codec for MSACM). Also needed by WMP10 to play .mp3 music files.

msaud32.acm.....(File version: 8.0.0.4487). Windows Media Audio
msg723.acm......Microsoft G.723.1 CODEC for MSACM

sl_anet.acm.....Audio codec for MS ACM

WINMM.DLL.......MCI API DLL
wmspdmoe.dll....Windows Media Audio 9 Voice Encoder

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BATMETER.DLL....(Battery Meter Helper DLL). Needed it to open Power Options in Control Panel

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NLS Files

NLS files = Code Page National Language Support, or National Language Services driver (font or font map).

A WORD OF CAUTION about NLS files: Delete any one of these you shouldn't, and your system will not reboot. Delete others you shouldn't, and some Web Pages will not display for you.


I live in the United States and have a U.S. computer.

If you live outside of the United States, and are using a foreign from U.S. computer, you will need to check within the Layout.ini file within your Prefetch folder to see exactly which NLS files your system uses.

The ones you need to at least reboot your computer will be listed there. Figuring out which other NLS files you need to see certain Web Page content is a little more complicated than that. You kind of have to play with them a little.

Here's a trick. Group all your NLS files together in the system32 folder, and highlight them all. Open any Web page. Now try to delete all the NLS files you have highlighted. The one being used by your open Web Page, is the one that won't delete.

For my U.S. computer, I keep these NLS Files:

c_437.nls.......<-- Needed just to be able to boot to Windows

c_932.nls
c_936.nls
c_949.nls
c_950.nls

c_1250.nls
c_1251.nls
c_1252.nls......<-- Needed just to be able to boot to Windows
c_1253.nls
c_1254.nls
c_1255.nls
c_1256.nls
c_1257.nls

c_28591.nls

ctype.nls.......<-- Needed just to be able to boot to Windows

l_intl.nls......<-- Needed just to be able to boot to Windows
locale.nls......<-- Needed just to be able to boot to Windows

sortkey.nls.....<-- Needed just to be able to boot to Windows
sorttbls.nls....<-- Needed just to be able to boot to Windows

unicode.nls.....<-- Needed just to be able to boot to Windows

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cabview.dll.....(Cabinet File Viewer Shell Extension). Needed to view inside .cab files

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Needed to play Windows Solitaire

cards.dll.......(Entertainment Pack Cardplaying Helper DLL).

SOL.EXE.........(Solitaire). A GUI solitaire card game.

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Needed by Windows Update

CDM.DLL.........(Windows Update CDM Stub).
crtdll.dll......(Cryptography Manager). Needed for Cryptographic Services
cryptsvc.dll....(Cryptographic Services). Needed for Cryptographic Services

DCIMAN32.DLL....DCI Manager
dssenh.dll......Microsoft Enhanced DSS and Diffie-Hellman Cryptographic Provider

GWFSPidGen.dll..PidGen

iuengine.dll....Windows Update Control Engine

JSCRIPT.DLL.....Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ JScript

LegitCheckControl.dll..Windows Genuine Advantage Validation
licdll.dll......Licdll Module

pidgen.dll......(Pid3.0 generation). During Windows setup the pidgen.dll produces a PID (Product Indentification) from the serial number entered.

qmgr.dll........Background Intelligent Transfer Service

rasapi32.dll....Remote Access API
rasman.dll......Remote Access Connection Manager
RTUTILS.DLL.....(Routing Utilities). Needed to get to Windows Update from your Start Menu shortcut

SCHANNEL.DLL....TLS / SSL Security Provider

TAPI32.DLL .....(MicrosoftÃÆ‚Ãââ‚ ¬Å¡Ãƒâ€šÃ‚ WindowsÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Telephony API Client DLL). Needed to get to Windows Update from your Start Menu shortcut

WLNOTIFY.DLL....Common DLL to receive Winlogon notifications
WUAPI.DLL.......Windows Update Client API
WUAUCLT.EXE.....(Windows Update). An auto-update client.
wuauclt1.exe....Windows Update AutoUpdate Client
wuaucpl.cpl.....Automatic Updates Control Panel
WUAUENG1.DLL....Windows Update AutoUpdate Engine
wuauserv.dll....(Windows Update AutoUpdate Service). Main Service file for Automatic Updates.
WUCLTUI.DLL.....Windows Update Client UI Plugin
wupdmgr.exe.....Windows Update Manager for NT
WUPS.DLL........Windows Update client proxy stub
wups2.dll.......Windows Update client proxy stub 2
WUWEB.DLL.......Windows Update Web Control


What Is Microsoft Update?

It's the new website from Microsoft that helps you update Microsoft Windows and many other Microsoft programs that you've installed, such as Microsoft Office, Microsoft Exchange Server and Microsoft SQL Server, all in one convenient place.

If I use Microsoft Update, do I still need to visit the Windows Update website?

No. Microsoft Update provides the same updates you find on the Windows Update website and more. Microsoft Update is designed to make it easier for you to update Windows and your Microsoft products in one place.


If you are going to install the New Microsoft Update Software, you will need these files in addition to those listed above:

corpol.dll.....Microsoft COM Runtime Execution Engine

ddrawex.dll....Direct Draw Ex
dxtmsft.dll....DirectX Media -- Image DirectX Transforms
dxtrans.dll....DirectX Media -- DirectX Transform Core

msidle.dll.....User Idle Monitor
muweb.dll......(Microsoft Update Web Control). Installed by New Microsoft Update Software
vssapi.dll.....MicrosoftÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ Volume Shadow Copy Requestor/Writer Services API DLL

webcheck.dll...Web Site Monitor

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These files comprise CHKDSK

CFGMGR32.DLL....Configuration Manager Forwarder DLL
CHKDSK.EXE......(Check Disk). A disk inspection tool that can search for and repair disk errors.

dskquota.dll....Windows Shell Disk Quota Support DLL
dskquoui.dll....Windows Shell Disk Quota UI DLL

fmifs.dll.......FM IFS Utility DLL

ifsutil.dll.....IFS Utility DLL

MFC42.DLL.......MFCDLL Shared Library - Retail Version

rshx32.dll......Security Shell Extension

twext.dll.......Previous Versions property page

ULIB.DLL........File Utilities Support DLL
untfs.dll.......NTFS Utility DLL

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CMD.EXE........(Command Prompt). An executable that provides the command prompt (MS-DOS shell interpreter) for Windows NT. Needed (at the very least) to be able to execute a batch file.

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Needed to view Summary tab in Properties of files

cryptext.dll....Crypto Shell Extensions

docprop.dll.....OLE DocFile Property Page
docprop2.dll....Microsoft DocProp Shell Ext

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Needed to watch Yahoo Movie Trailers

dispex.dll......Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ DispEx

iepeers.dll.....Internet Explorer Peer Objects

NETCFGX.DLL.....(Network Configuration Objects). I start receiving DCOM errors in Event Viewer when I delete this file. It is also needed to open and to view Network Connections from Control Panel.

NETMAN.DLL......(Network Connections Manager). I start receiving DCOM errors in Event Viewer when I delete this file. It is also needed to open and to view Network Connections from Control Panel.

NETSHELL.DLL....Network Connections Shell

wmnetmgr.dll....Windows Media Network Plugin Manager DLL
WMVCORE.DLL.....Windows Media Playback/Authoring DLL

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DirectX

Microsoft DirectX is a group of technologies designed to make Windows-based computers an ideal platform for running and displaying applications rich in multimedia elements such as full-color graphics, video, 3D animation, and rich audio.

I don't play games on my computer so I really have no need for the extra graphics and sound support DirectX has to offer. I do, however, keep a few DirectX files because NVDVD Player needs them, and a couple of other DirectX files because Windows Media Player 10 needs them. (See PART 9 for those DirectX files I delete.)


d3d8thk.dll....(Microsoft Direct3D OS Thunk Layer). Needed by NVDVD Player
d3d9.dll.......(Microsoft Direct3D). Needed by NVDVD Player
d3dim700.dll...(Microsoft Direct3D). Needed by NVDVD Player

ddraw.dll......(Microsoft DirectDraw). Needed by NVDVD Player
ddrawex.dll.....(Direct Draw Ex). <-- If you are going to install the New Microsoft Update Software, you will need this file

devenum.dll....(Device enumeration). Needed by NVDVD Player

dsound.dll.....(DirectSound). Needed by Windows Media Player 10

dxtmsft.dll.....(DirectX Media -- Image DirectX Transforms). <-- If you are going to install the New Microsoft Update Software, you will need this file

dxtrans.dll.....(DirectX Media -- DirectX Transform Core). <-- If you are going to install the New Microsoft Update Software, you will need this file

ksuser.dll.....(User CSA Library). Needed by NVDVD Player

msdmo.dll......(DMO Runtime). Needed by NVDVD Player

qdvd.dll.......(DirectShow DVD Playback Runtime). Needed by NVDVD Player
quartz.dll.....(DirectShow Runtime). Needed by Windows Media Player 10

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In Display Properties -> Settings tab -> Advanced button, these files are needed to view the content under the Adapter and Troubleshooting tabs.

deskadp.dll.....Advanced display adapter properties
deskmon.dll.....Advanced display monitor properties
deskperf.dll....Advanced display performance properties

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Third-party Codecs

DivX.dll........(DivXÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ Codec for Windows). Installed by DivX
DivXAF.ax.......(DivX AntiFreeze Filter). Third-party codec I installed to prevent video freezing on damaged video
divxdec.ax......(DivXÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ Decoder Filter). Installed by DivX

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Windows Media Player 10

I keep about 35% of the Windows Media Player 10 files installed on my system. (See PART 9 for the 65% of Windows Media Player 10 files I do delete. You'll also find in PART 9 mplayer2 files I delete.)

This list are those files I keep in order for Windows Media Player 10 to function properly.

dsound.dll......DirectSound

mcicda.dll......(MCI driver for cdaudio devices). Needed by Windows Media Player 10 burning process
msvfw32.dll.....Microsoft Video for Windows DLL
MSWMDM.dll......(Windows Media Device Manager Core). Needed by Windows Media Player 10 burning process

quartz.dll......DirectShow Runtime

shmedia.dll.....(Media File Property Extractor Shell Extension). Needed by Windows Media Player 10 burning process

WMASF.DLL.......Windows Media ASF DLL

WDMAUD.DRV......(WDM Audio driver mapper). Needed by Windows Media Player 10. And also needed to hear the sounds made in Windows Pinball Game

WMDMPS.dll......(Windows Media Device Manager Proxy Stub). Needed by Windows Media Player 10 burning process
WMP.DLL.........Windows Media Player Core
wmpcd.dll.......Windows Media Player
WMPLOC.DLL......Windows Media Player
wmpshell.dll....Windows Media Player Launcher


Audio Codecs I do not delete:

acelpdec.ax....(ACELP.net Audio Decoder). Needed by NVDVD

l3codeca.acm....(MPEG Layer-3 Audio Codec for MSACM). Needed by WMP10 to play .mp3 music files. Also needed by Plus! MP3 Audio Converter LE to convert .mp3 files to .wma files.

l3codecx.ax.....(MPEG Layer-3 Audio Decoder). Codec needed for WMP10 to play .avi files

msadp32.acm.....(Microsoft ADPCM CODEC for MSACM). Codec needed by Yahoo Voice Chat
msg711.acm......(Microsoft CCITT G.711 (A-Law and u-Law) CODEC for MSACM). Codec needed by Yahoo Voice Chat
msg723.acm......(Microsoft G.723.1 CODEC for MSACM). Needed by Plus! MP3 Audio Converter LE to convert .mp3 files to .wma files

msgsm32.acm.....(Microsoft GSM 6.10 Audio CODEC for MSACM). Codec needed by Yahoo Voice Chat

tsd32.dll.......(DSP Group TrueSpeechÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Audio Encoder & Decoder). Needed by Yahoo Chat
tssoft32.acm....(DSP Group TrueSpeechÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Audio Codec for MSACM V3.50.). Codec needed by Yahoo Voice Chat

wmadmod.dll.....Windows Media Audio Decoder
wmadmoe.dll.....(Windows Media Audio Encoder/Transcoder). Needed by Windows Media Player 10 ripping process

wmspdmoe.dll....(Windows Media Audio 9 Voice Encoder). Needed by Plus! MP3 Audio Converter LE to convert .mp3 files to .wma files


Video Codecs I do not delete:

l3codeca.acm....(MPEG Layer-3 Audio Codec for MSACM). Needed by WMP10 to play .mp3 music files. Also needed by Plus! MP3 Audio Converter LE to convert .mp3 files to .wma files.

l3codecx.ax.....(MPEG Layer-3 Audio Decoder). Codec needed for WMP10 to play .avi files

mpg4dmod.dll....(Corona Windows Media MPEG-4 S Video Decoder). Needed to be able to adjust the brightness in WMP10 for certain videos

wmvdmod.dll.....Windows Media Video Decoder

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Needed by Add/Remove Module

duser.dll.......(Windows DirectUser Engine). Needed by Add/Remove Module. Also, if you delete this file, Windows will display the classic logoff and logon prompts.

xpsp1res.dll ...(Service Pack 1 Messages). Needed to open Add/Remove Programs from the Control Panel

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ERASER.DLL .....(Eraser Library). Installed by the Eraser program, and needed by it to operate.

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Needed by Services window

filemgmt.dll....Services and Shared Folders

mfc42u.dll......(MFCDLL Shared Library - Retail Version). Needed by Services Viewer. And also needed by Worpdad.
mmcbase.dll.....(MMC Base DLL). Needed to access Services from the Start Menu
mmcndmgr.dll....(MMC Node Manager DLL). Needed to access Services from the Start Menu

services.msc....Services Viewer Microsoft Management Console

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To do with Fonts

FNTCACHE.DAT....(Font Cache). If deleted, Windows will rebuild a new FNTCACHE.DAT file the next time you reboot your system. NOTE: After I delete all of the fonts outlined in PART 5, I delete the FNTCACHE.DAT file from C:\WINDOWS\system32, and then reboot my system. Windows will then rebuild a new FNTCACHE.DAT file upon rebooting.

fontext.dll.....(Windows Font Folder). Needed to maintain selected view of Font Folder, and also needed to display the default icon for .TTF Fonts

FONTVIEW.EXE....(Font View). A command-line utility that displays a sample output for a font in a printable GUI window.

LZ32.DLL........(LZ Expand/Compress API DLL). The LZ32.DLL is needed to display properly the default icon for .ttf extension fonts. Also, without it, should you double-click on a .ttf font file to view in Font View, you will receive an Application Popup error saying that this application failed to start because LZ32.dll was not found. However, the Font View will open after you click OK on the error popup. And reportedly, some install setups fail to start, and the DirectX Diagnostic Tool (dxdiag.exe) also exhibits an error upon loading.

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framebuf.dll....(Framebuffer Display Driver). Needed so graphics in safemode don't looked all screwed up

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framedyn.dll....WMI SDK Provider Framework

I moved the framedyn.dll to the system32 folder from the wbem folder before I deleted the wbem folder and its contents. This I did in PART 2.

Sometimes when you run System Restore you will receive this error: "System restore was unable to start due to a missing framedyn.dll. Please reinstall the application to fix this problem." I personally don't use Windows System Restore, but this is good to know for someone who does.

Without "framedyn.dll" you might also get an error when right-clicking on My Computer to enter System Properties.

Keeping the framedyn.dll file in the system32 folder prevents any of this from happening.

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glu32.dll.......(OpenGL Utility Library DLL). Reportedly, glu32.dll is used by windows to allow for the use of OpenGL which is an industry standard for 3D graphics. If opengl32.dll is unavailable, any software that uses OpenGL to display graphics, will not work.

That may or may not be necessarily true. I haven't used every piece of software that uses OpenGL.

Deleting glu32.dll can however sometimes lead to an Application Popup Error similar to this one: Application popup: vlc.exe - Unable To Locate Component: This application has failed to start because GLU32.dll was not found. Re-installing the application may fix this problem.

In my case, VLC Media Player will eventually open video files for me, but not without this error showing up first.

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GRPCONV.EXE.....(Group Convert). Converts Microsoft Windows 3.x and Microsoft Windows for Workgroups Program Manager groups into Start menu items. Needed by some programs to install

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hccoin.dll......(USB Coinstaller). Needed by Intel Chipset INF Update Utility

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Needed by Acronis True Image

hhctrl.ocx......MicrosoftÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ HTML Help Control

Installed by Acronis True Image, and needed by it to operate:

setupnt.dll.....Setupnt Dynamic Link Library
SNAPAPI.DLL.....Acronis Snapshot Dynamic Link Library

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Needed by Realtek Sound Card

hid.dll.........(Hid User Library). Needed to open Realtek's Audio Configuration Utility (soundman.exe in C:\WINDOWS)

ksproxy.ax......(WDM Streaming ActiveMovie Proxy). Realtek AC'97 asks for this file when installing audio drivers

newdev.dll......(Add Hardware Device Library). Realtek's Driver Installer (alcupd.exe file in C:\WINDOWS) needs this file to install drivers. I'm sure other devices need it too.

RTLCPAPI.dll....RtlCPAPI Module

These 3 .WAV files are also created by Realtek Sound Card. If I remove these .WAV files, they are re-created as soon as I open the Realtek Audio Control Panel (RTLCPL.EXE)...with "ALSNDMGR.WAV" being the exception. ALSNDMGR.WAV is the one .WAV file that has so far not re-created itself. I have ALSNDMGR.WAV deleted in PART 10.

ALSNDMGR.WAV

BuzzingBee.wav

LoopyMusic.wav

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Needed by Wordpad

html.iec........(Microsoft HTML Converter). Needed to be able to copy text from a web page and paste it to Wordpad

mfc42u.dll......(MFCDLL Shared Library - Retail Version). Needed by Wordpad. And also needed by Services Viewer.
msftedit.dll....Rich Text Edit Control, v4.1

oledlg.dll .....(Microsoft WindowsÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ OLE 2.0 User Interface Support). Needed by Wordpad. And also needed to connect to Kazza Lite.

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I263_32.DRV.....(Intel I.263 Video Driver 2.55.012). Third-party codec I need to play one particular video I have saved

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Needed by Yahoo Chat

imaadp32.acm....(IMA ADPCM CODEC for MSACM). Codec needed by Yahoo Voice Chat

msadp32.acm.....(Microsoft ADPCM CODEC for MSACM). Codec needed by Yahoo Voice Chat
msg711.acm......(Microsoft CCITT G.711 (A-Law and u-Law) CODEC for MSACM). Codec needed by Yahoo Voice Chat
msgsm32.acm.....(Microsoft GSM 6.10 Audio CODEC for MSACM). Codec needed by Yahoo Voice Chat

netmsg.dll......Net Messages DLL

tsd32.dll.......DSP Group TrueSpeechÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Audio Encoder & Decoder
tssoft32.acm....(DSP Group TrueSpeechÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Audio Codec for MSACM V3.50). Codec needed by Yahoo Voice Chat

vbscript.dll....Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ VBScript

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IMAPI.EXE.......(CD-Burning COM Service). Manages CD recording using Image Mastering Applications Programming Interface (IMAPI). If this service is stopped the computer cannot burn CDs using Windows Media Player 10.

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inetcplc.dll....(Internet Control Panel). Needed to access Internet Options

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itss.dll........(MicrosoftÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ InfoTech Storage System Library). Cannot open a *.chm help file without this file. You will receive an error similar to this when you do: "Can not open the file: mk:@MSITStore".

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Needed by Microsoft's Pinball Game

MSACM32.DRV.....(Microsoft Sound Mapper). Needed to hear the sounds made in Windows Pinball Game

WDMAUD.DRV......(WDM Audio driver mapper). Needed to hear the sounds made in Windows Pinball Game. And also needed by Windows Media Player 10.

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MPNOTIFY.EXE....(Multiple Provider Notify). Used by the WinLogon service to notify non-Microsoft network servers about security events

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These files are needed by SpywareBlaster

MSCOMCTL.OCX....Windows Common Controls ActiveX Control DLL
MSINET.OCX......Microsoft Internet Transfer Control DLL

MSSTDFMT.DLL....(Microsoft Standard Data Formating Object DLL). I noticed that if I delete this file, when I download and install the latest version of SpywareBlaster, the installation restores it to system32.

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msconfig.exe....(System Configuration Utility). Designed to help you troubleshoot problems with your computer. MSCONFIG can also be used to ensure that your computer boots faster and crashes less. I moved msconfig.exe to the system32 folder from C:\WINDOWS\pchealth\helpctr\binaries before I deleted the pchealth folder and its contents in PART 5.

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MSHTML.TLB......(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ MSHTML Typelib). Needed to be able to save a Webpage as an offline Webpage with a .mht extension.

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MSHTMLED.DLL....(Microsoft ÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ HTML Editing Component). This file gives you the ability to edit HTML. An example of that would be when you edit one of your posts on some forums. You wouldn't be able to do that without this file.

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Windows Installer

Windows Installer uses the information within .MSI files that are provided with some applications, and installs, repairs, or removes software using this information. You can view these .MSI (Windows Installer File) files within the C:\WINDOWS\Installer folder.

MSI.DLL.........Windows Installer
MSIEXEC.EXE.....(Windows Installer). Main Service File for Windows Installer.
msihnd.dll......WindowsÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚ installer

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Needed by Kazaa Lite

msisip.dll......MSI Signature SIP Provider

oledlg.dll .....(Microsoft WindowsÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ OLE 2.0 User Interface Support). Needed to connect to Kazza Lite. And also needed by Wordpad.

olepro32.dll....Needed to connect to Kazza Lite.

riched20.dll....(Rich Text Edit Control, v3.0). Needed by Kazaa Lite. Also needed to read Information and Error Messages (Event Properties) in Event Viewer.

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MSPAINT.EXE.....(Microsoft Paint). A basic graphics creation and viewing tool

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Needed by Task Scheduler

mstask.dll......Task Scheduler interface DLL
MSTINIT.EXE.....(Task Scheduler Setup). Allows scheduling automated tasks.

schedsvc.dll....(Task Scheduler Engine). [/b]Main Service file for Task Scheduler.[/b]

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mydocs.dll......(My Documents Folder UI). Needed to display properly the My Documents Icon. You can delete this file safely if you want. It just kind of annoys me to see icon displayed improperly.

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Needed by Nero Program (See PART 9 for Nero Program files I do delete.)

NeroCheck.exe...NeroCheck

OLETHK32.DLL....Microsoft OLE for Windows

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NOTEPAD.EXE.....(Notepad). Notepad text-editing utility

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NVIDIA Display Drivers

I find I can delete a little over half of the files NVIDIA places in the system32 folder, and everything will still be in good working order after...at least as far as my needs go. (See PART 9 for NVIDIA files I delete.)

I keep these NVIDIA files in C:\WINDOWS\system32:

nv4_disp.dll....(NVIDIA Compatible Windows 2000 Display driver). Essential for Display Adapter
nvapps.xml......<-- You can delete this file, but it will only return after a reboot.
nvcod.dll.......NVIDIA Driver CoInstaller
nvcpl.dll.......NVIDIA Display Properties Extension

nvdisp.nvu......When I deleted this seemingly harmless file, I started getting a Memory Error Popup just as I would click to restart my computer. This Memory Error Popup reflected as an Application Error in the Event Viewer. Even when I put the file back in the system32 folder, the errors would continue. I also keep this file because if you open it with Notepad, you can see that it gives proper guidance to the uninstall process. It directs what to remove and what to UnRegister in the registry.

nvshell.dll.....NVIDIA Desktop Explorer

nvudisp.exe.....(NVIDIA Uninstaller Utility). I keep the nvudisp.exe file, because it is needed by NVIDIA to uninstall older drivers before installing new drivers during the updating process.

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occache.dll.....(Object Control Viewer). Needed to view icon for ActiveX objects in Downloaded Program Files. Otherwise, the ActiveX objects show up as .ini files.

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opengl32.dll....(OpenGL Client DLL). Reportedly, opengl32.dll is used by windows to allow for the use of OpenGL which is an industry standard for 3D graphics. If opengl32.dll is unavailable, any software that uses OpenGL to display graphics, will not work.

That may or may not be necessarily true. I haven't used every piece of software that uses OpenGL.

Deleting opengl32.dll can however sometimes lead to an Application Popup Error similar to this one: Application popup: vlc.exe - Unable To Locate Component: This application has failed to start because OPENGL32.DLL was not found. Re-installing the application may fix this problem.

In my case, VLC media player will eventually open video files, but not without that error showing up first.

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REGSVR32.EXE....(MicrosoftÃÆ‚Ãâ₠¬Å¡Ãƒâ€šÃ‚© Register Server). You can use the Regsvr32 tool (Regsvr32.exe) to Register and UnRegister object linking and embedding (OLE) controls such as dynamic-link library (DLL) or ActiveX Controls (OCX) files that are self-registerable

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RUNDLL32.EXE....(Run DLL). Used to run DLL files from a command line

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RUNONCE.EXE.....(Run Once). Used to perform tasks as defined in the RunOnce Registry key

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Needed to display Properties button in Control Panel > Keyboard > Hardware without receiving an error

sfcfiles.dll....Windows 2000 System File Checker
syssetup.dll....Windows NT System Setup

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SHUTDOWN.EXE....(Remote Shutdown Tool). Allows shutdowns and restarts on local or remote PCs. I need this file to create a reboot computer shortcut in my Quick Launch.

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SNDREC32.EXE....(Sound Recorder). A sound recorder application

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SNDVOL32.EXE....(Volume Control). A GUI volume application

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stdole2.tlb ....(Microsoft OLE 3.50 for Windows NTÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ and Windows 95ÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Operating Systems). Needed to display Properties of devices in Device Manager

stdole32.tlb....Microsoft OLE 2.1 for Windows NTÃÆ¢âââ €šÂ¬Ã…¾Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Operating System

When you try to install a program that uses InstallShield, you may receive the following error message: "The install Shield engine "ikernel.exe" could not be launched -Error loading type library /dll."

This issue may occur if one or more of the following files are missing from the Windows\System32 folder:

ÃÆ¢âââ ‚¬Å¡Ã‚¬Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Stdole.tlb....<--This file is actually in C:\WINDOWS\system. (See PART 5)
ÃÆ¢âââ ‚¬Å¡Ã‚¬Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Stdole2.tlb...
ÃÆ¢âââ ‚¬Å¡Ã‚¬Ãà ƒÂ¢Ã¢â€šÂ¬Ã…¡Ãƒâ€šÃ‚¢ Stdole32.tlb..

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Needed by Windows Task Manager

TASKMGR.EXE.....(Task Manager). The Task Manager application

vdmdbg.dll......(VDMDBG.DLL). Needed to access Windows Task Manager

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themeui.dll.....(Windows Theme API). Needed by Display Properties

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WINVER.EXE......(Version Reporter Applet). Displays the current Windows version

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WMI.DLL.........(WMI DC and DP functionality). When I delete WMI.DLL, I start receiving DCOM errors in Event Viewer. Needed also to open and to view Network Connections from Control Panel, and needed to enter Computer Management without receiving an error.

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WZCSAPI.DLL.....(Wireless Zero Configuration service API). It is needed to open and view Network Connections from the Control Panel. Also, when I delete this file, I start receiving DCOM errors in the Event Viewer.

WZCSVC.DLL......(Wireless Zero Configuration Service). Main Service File for Wireless Zero Configuration. It is needed to open and view Network Connections from the Control Panel. Also, when I delete this file, I start receiving DCOM errors in the Event Viewer.

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xpsp3res.dll....(Service Pack 3 Messages).

This Windows Update shows up after deleting the xpsp3res.dll file:

Security Update for Windows XP (KB890046)

Typical download size: 469 KB , 1 minute
A security issue has been identified in Microsoft Agent that could allow an attacker to compromise your Windows-based system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.

If you install this Update, the xpsp3res.dll is once again created in system32.

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Belong to XviD Codec

xvid.ax
xvidcore.dll
xvidvfw.dll

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zipfldr.dll ......(Compressed (zipped) Folders). Needed to package files in Compressed (zipped) form