We have a 2012 R2 Host Server that had been backing up 100% Using Altaro Software. Now we are getting failed backups. We have found that the "Microsoft Hyper-V VSS Writer" keeps failing. During our investigations we have found that we appear to have a corrupt file (Catsrvut.dll) being part of the COM process we have tried to fix the corruption. The error message is below. If we just run "SFC /SCANNOW" the results say everything is fine but it clearly is not if you runf SCANFILE. Running this command also comes back with a clean report "DISM.exe /Online /Cleanup-image /Restorehealth"
It seems that this file is not easy to fix so we are asking for some assistance to resolve this corruption. Thanks in advance guys.
Windows Resource Protection found corrupt files but was unable to fix some
of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For
example C:\Windows\Logs\CBS\CBS.log. Note that logging is currently not
supported in offline servicing scenarios."