App pool disabled after installing KB973917. Workerprocess crashing, logging event with exit code ‘0xffffffff’

After installing KB973917 your IIS 6.0 server started experiencing issues. Why does this happen? Earlier installation of Windows Server 2003 Service Pack 2 on the server did not complete successfully, leaving some of the IIS .dlls at the Service Pack 1 level while bringing others up to the Service Pack 2 level.  The IIS services had…

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