Hi I'm new here. I recently got a virus on my pc and removed most of it but it seems to have corrupted the window installer. I have tried serval of the methods posted in the forum to no success. Is there anyway other than a restore/format to fix the window installer?
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Could you tell us what you have tried to restore Windows Installer?

My recommendation would be to re-install your entire computer as you can never be sure that it is all gone. Allthough, I like to add all kind of malware (including viruses & trojans) to a VM to investigate (Process Monitor and strace) and remove (Icesword) them just for fun [8D]
Answered 08/16/2008 by: AngelD
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I have tried unregistering the windows installer and reregistering it with the commands msiexec /unregister and msiexec /regserver. I have also tried unregistering then renaming the .dll files i.e. msi.dll to msi.dll.bak., Msihnd.dll to Msihnd.dll.bak., and Msiexec.exe to Msiexec.exe.bak.
Answered 08/16/2008 by: Graig
Senior Yellow Belt

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Did you make sure the Windows Installer (MSIServer) service is not set to disabled?

Have you tried to reinstall it?
Windows Installer 3.1 Redistributable (v2)
http://www.microsoft.com/downloads/details.aspx?FamilyID=889482FC-5F56-4A38-B838-DE776FD4138C&displaylang=en
Windows Installer 4.5 Redistributable
http://www.microsoft.com/downloads/details.aspx?FamilyId=5A58B56F-60B6-4412-95B9-54D056D6F9F4&displaylang=en

You may need to flush the Windows Installer metadata using "Windows Installer CleanUp Utility": http://support.microsoft.com/kb/290301/en-us
Answered 08/17/2008 by: AngelD
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I did the run command misexec /regserver is there a way to make sure that enabled it? And I have tried reinstalling the windows installer using Windows Installer 3.1 Redistribution but everytime I try to install anything my pc crashes. As fas as flushing it no I have not tried that but I will and replay with what happens.
Answered 08/17/2008 by: Graig
Senior Yellow Belt

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Sounds like your computer got very unstable after "removing" the virus.
If I were you I would reinstall the whole computer.
Answered 08/18/2008 by: AngelD
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Thank you for your help. I think your right and will be doing a reinstall.
Answered 08/18/2008 by: Graig
Senior Yellow Belt

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Ok I didn't do a reinstall. I was told of a program called Dial a Fix and fixes windows components without having to install anything and have now fixed the windows installer. Thank you for your help.
Answered 08/18/2008 by: Graig
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