When you install Service Pack 1, your event viewer may contain many Windows File Protection (WFP) error messages, similar to the following:
The system file c:\winnt\system32\xenroll.dll could not be copied into the DLL cache. The specific error code is 0x0000000 \[The operation completed successfully.\] This file is necessary to maintain system stability.
The system file c:\winnt\system32\inetsrv\smtpadm.dll could not be copied into the dll cache. The specific error code is 0x00000002 \[The system cannot find the file specified.\] This file is necessary to maintain system stability.
The system file c:\winnt\system32\gdi32.dll could not be copied into the DLL cache. The specific error code is 0x800b0100 \[No signature was present in the subject.\] This file is necessary to maintain system stability.
This is a problem that was corrected in SP1, but the updated SFC.DLL for the System File Checker (SFC) doesn't function until restart.
You may ignore these errors.
