Recently we have been having some problems with the Group Policy software installation on our work network. The problem is a couple of error messages in the event log when the client computers try to apply software settings. The 2 errors are
Failed to apply changes to software installation settings. Software changes could not be applied. A previous log entry with details should exist. The error was : The software installation data in the Active Directory is corrupt.
The Group Policy client-side extension Software Installation failed to execute. Please look for any errors reported earlier by that extension.
While I have absolutely no idea as to what the problem is, it was only happening at one of our sites. The fix was to perform a non-authoritative restore on the Global Catalog server in the offending site.