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Windows 2008 Backup fails to backup Hyper-V VM’s

Please correct me if I have any misunderstanding.

Windows Server Backup will back up Hyper-V VM’s after you register the Hyper-V VSS writer per KB958662. The current failure seems to be the VMMS service crashes unexpectedly. I suggest we perform the followings to troubleshoot the issue:

1. Launch Hyper-V Manager and choose Stop service and restart service to restart the Virtual Machine Management Service.

2. Re-register related DLL’s. To do so, copy the following commands to a BAT file, then run this BAT file as administrator:

net stop "System Event Notification Service"
net stop "COM+ Event System"
net stop "Microsoft Software Shadow Copy Provider"
net stop "Volume Shadow Copy"
cd /d %windir%\system32
net stop vss
net stop swprv
regsvr32 /s ole32.dll
regsvr32 /s oleaut32.dll
regsvr32 /s vss_ps.dll
vssvc /register
regsvr32 /s /i swprv.dll
regsvr32 /s /i eventcls.dll
regsvr32 /s es.dll
regsvr32 /s stdprov.dll
regsvr32 /s vssui.dll
regsvr32 /s msxml3.dll
net start "System Event Notification Service"
net start "COM+ Event System"
net start "Microsoft Software Shadow Copy Provider"
net start "Volume Shadow Copy"

3. Clear the logs in the “C:\Windows\Logs\WindowsServerBackup” folder

4. Run Windows Server Back to check the result.



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