Why do I get a 'corrupted installation file' message during Windows 10 installation? Update Cancel. I recommend Rufus to create the USB installer. If the Windows Installer engine is corrupted, disabled, or installed incorrectly, this may cause program installation issues. Use the following methods to identify any Windows Installer issues that may be causing problems when you install, uninstall, or update programs.

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windows installer is corrupted using win2000pro, and i don't know how to fix this....please help
i posted last night that i was trying to resurrect a Gateway intel p4 that had a virus and the system was completely corrupted and i was trying to reinstall windows2000pro.
the original gateway disks refused to restore the pc so i used fdisk to format and partition and then load windows2000pro....i had quite a lot of trouble with that as the pc could not read or access the drive the cd was in, but i worked out how to get the pc to install from the cd today finally!!!! (thanks ppls for help)
anyway i was doing okey tonight installing win2000pro, installed the drivers etc off the gateway disks, and put back in most integral programs inc antivirus. initial system scan with norton showed no virus'. i continued to install several popular applications off disks and set up internet account. upon dialing to the net to get update for norton, i received an error that windows installer was corrupt and/or there was a virus infecting main system.
after this i kept getting the windows installer pop up, like it was trying to install something, i click cancel but it kept popping up (it was doing this before the major format to) so either the fdisk did not successfully format, which i beleive it couldn't do as the gateway files were still in the background somewhere or something else is corrupting pc the instant i log on to the net?
so the question is how do i fix this corrupted windows installer. the current version is msi.dll is 2.0.