Error after Add/Remove Programs

[Joena]

Received the following error after running Add/Remove
Programs in Control Panel. Now there are no programs
listed in Add/Remove Programs box. How easy is it to
repair the registry per instructions posted on Microsoft
website? Need input!!!

Error: An unexpected error occurred. Class not
registered. res://appwiz.cpl/listbox.htc Line: 225

 

[Dave Patrick]

From the "Run" box try;
regsvr32 %windir%\system32\appwiz.cpl

regsvr32 %windir%\system32\webvw.dll
to rebuild several *.htt files

If unsuccessful try
sfc /purgecache
sfc /scannow

Or try the regedits described in;
Add/Remove Programs Tool Displays Installed Programs Incorrectly
http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;Q266668

If the problem persists, you'll likely need to perform an in-place upgrade.

How to Perform an In-Place Upgrade of Windows 2000
http://support.microsoft.com/support/kb/articles/Q292/1/75.ASP

What an In-Place Windows 2000 Upgrade Changes and What It Does Not Change
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q306952

 

[Dave Patrick]

From the "Run" box try;
regsvr32 %windir%\system32\appwiz.cpl

regsvr32 %windir%\system32\webvw.dll
to rebuild several *.htt files

If unsuccessful try
sfc /purgecache
sfc /scannow

Or try the regedits described in;
Add/Remove Programs Tool Displays Installed Programs Incorrectly
http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;Q266668

If the problem persists, you'll likely need to perform an in-place upgrade.

How to Perform an In-Place Upgrade of Windows 2000
http://support.microsoft.com/support/kb/articles/Q292/1/75.ASP

What an In-Place Windows 2000 Upgrade Changes and What It Does Not Change
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q306952

 

[zip400]

zip400

I installed MDAC 2.8, free from microsoft.com, It fixed the problem.