Cannot Uninstall Programs

try these steps:

Click Start, and then click Run.
In the Open box, type Dcomcnfg.exe, and then click OK.
In the Distributed COM Configuration Properties dialog box, click Edit Default on the Default Security tab under Default Access Permissions.
In the Registry Value Permissions dialog box, click Add.
In the List Names From list, click the Domain selection that you want.
In the Names list, click SYSTEM (the operating system), and then click Add.
In the Type of Access list, click Allow Access, and then click OK twice.
Under Default Launch Permissions, click Edit Default.
In the Registry Value Permissions dialog box, click Add.
In the List Names From list, click the Domain selection that you want.
In the Names list, click SYSTEM (the operating system), and then click Add.
In the Type of Access list, click Allow Launch, and then click OK twice.
Click Apply, and then click OK.
and try what you want...

and also try to install Service pack 4 (even if it's installed) and hot fixes (windows update)

Hi sait01,

  I tried all your options but still problem.Before this I was not able to open Control Panel also, so i ran sfc /scannow and sfc /purgecach, restarted then i can open Control panel-Add/remove programs. Then I was not able to uninstall the programs for which you suggested those option, But now again Iam not able open control panel and there are no icons on the desktop.. Server is responding very slow, I can open other snapins like Exchange system manager but there are no icons on the desktop.I am really frustrated and not undestanding what to do.. Please Help..

Hi,

  Again when Iam trying Install or Unistall any program , after 10-15 min. an error comes saying " Install Server Not responding". I was trying to install SP4, but it also took 15-20 min. but not installed. Pls Help

Mac.