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Windows Installer Corruption

By dennis.irvine ·
After installing SP3 on Windows 2000 machine the Windows installer service became corrupted. I can not longer install programs or updates. I cannot re-install the installer and I have checked the knowledge base and technet. No answers so far. I was hoping to avoid a complete re-install. Any suggestions? (windows 2000 pro SP3)

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Windows Installer Corruption

by Joseph Moore In reply to Windows Installer Corrupt ...

Did you see Technet article Q324631, "Service Pack 3 Update Is Unsuccessful When DCOM Impersonation Level Is Set to Anonymous"? It states the following:

SYMPTOMS
If you try to install Service Pack 3 (SP3) for Windows 2000 on a computer on which the Distributed Component Object Model (DCOM) default impersonation level is set to Anonymous, the upgrade to Service Pack 3 is unsuccessful and you receive the following error message:

An error in updating your system has occurred.
When you click OK, Windows is not upgraded to SP3 and you can no longer install programs that use the Windows Installer (.msi packages).

NOTE: If you later try to install a program that uses the Windows Installer, you may receive an error message similar tothe following:

The Windows Installer Service could not be accessed.
This can occur if you are running Windows in safe
mode, or if the Windows Installer is not correctly
installed. Contact your support personnel for assistance.
CAUSE
This behavior occurs because version 2.0.2600.2 of the Windows Installer (included with SP3 for Windows 2000) does not install or run on a computer where the DCOM default impersonation level is set to Anonymous.

After an unsuccessful SP3 installation, version 2.0.2600.2 of the Windows Installer remains on the computer, but in a nonfunctioning state.

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Windows Installer Corruption

by Joseph Moore In reply to Windows Installer Corrupt ...

Here is the rest of the article:

RESOLUTION
To work around this issue, change the DCOM default impersonation level to Identify, remove the Msisip.dll file, and then reinstall SP3 for Windows 2000. To do this, follow these steps:
Click Start, click Run, type dcomcnfg in the Open box, and then click OK.
Click the Default Properties tab, and then click Identify in the Default Impersonation Level list.
Click OK.
Click Start, click Run, type explorer /select, %windir%\system32\msisip.dll inthe Open box, and then click OK.
Right-click Msisip.dll, and then click Rename.
Rename Msisip.dll as msisip.old, and then press ENTER.
Reinstall SP3 for Windows 2000.


The URL for this article is:
http://support.microsoft.com/default.aspx?scid=kb;en-us;q324631
(please remove any spaces)

hope this helps

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Windows Installer Corruption

by dennis.irvine In reply to Windows Installer Corrupt ...

I have tried checking the DCOM impersonator level.
It is set a identify.

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