Any advice is much appreciated, I have now spent a day researching this.
PROBLEM: SBS 2011 Standard using the integrated backup software to a USB Hard Drive.
Backups fail with following info...
VSS Full Backup
Failed
A Volume Shadow Copy Service operation failed.
The operation was stopped. Detailed error: The volume shadow copy operation failed with error 0x800423F4.
Event Logs Show the following item 3 times (for Registry Writer, ASR Writer, and Shadow Copy Optimization Writer):
Volume Shadow Copy Service error: Failed resolving account spsearch with status 1376. Check connection to domain controller and VssAccessControl registry key.
Error-specific details:
Error: NetLocalGroupGetMemebers(spsearch), 0x80070560, The specified local group does not exist.
FACTS:
* The backup works if I stop the service 'SQL Server VSS Writer.' State: [8] Failed Last error: Non-retryable error
* I have already run chkdsk /F
* I have tried assigning a drive letter to my USB backup drive as well as reformatting it
* I have already done http://support.microsoft.com/kb/2483007
* I have already run PSConfig.exe -cmd upgrade -inplace b2b -force -cmd applicationcontent -install -cmd installfeatures
OTHER INFO:
The backup quit working the same day updates KB2709162 and KB2676562 were installed. I'm not sure if it's related but I would assume so.
I have read other things like changing the active volume, etc. but have not tried those items because they didn't seem relevant.
Thank you.