This problem was another result because of a snapshot taken at the virtualized SQL Server. After stepping back to a state in the past using the snapshot I got the error “The object SPPersistedFile Name=SOLUTIONNAME-SOMEGUID.bak Parent=SPSolutionLanguagePack Name=0 has been deleted by another user since it was last fetched.” and after that the COM exception.

You can read more about the previous error:

• The object SPPersistedFile Name=SOLUTIONNAME-SOMEGUID.bak Parent=SPSolutionLanguagePack Name=0 has been deleted by another user since it was last fetched.

Problem description

I can’t remember what I exactly did but it was upgradesolution, deploysolution or retractsolution which resulted in the following error:

Retrieving the COM class factory for component with CLSID {A8F03BE3-EDB7-4972-821F-AF6F8EA34884} failed due to the following error: 800703fa.

This error occurred on a Windows Server 2008.

Solution

iisreset ;) I was really lucky that the problem was gone after doing an iisreset because I didn’t want to track down a COM exception.