Unable to perform the VSS backup.

Issue:

Unable to perform the VSS backup.

Error:

Error code:  0x8000FFFF"

Event ID Logs:

Event Type: Error
Event Source: VSS
Event ID: 12302

Cause:

Issue with the corrupted registry settings

Steps to replicate:

Perform vssadmin list writers in cmd - If unable to get any writers listed need to follow the resolution.

Resolution:

We need to delete the registry key

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79216}\Subscriptions

Note: Before deleting the registry key please backup the complete registry

After deleting the registry we need to restart the services

• COM+ Event System
• COM+ System Application
• Microsoft Software Shadow Copy Provider
• Volume Shadow Copy

After restarting the services perform "vssadmin list writers" if the writers get displayed the backup should work fine if still not then we need to register the dll files

Dll files:

cd /d %windir%\system32

net stop vss

net stop swprv

regsvr32 ole32.dll

regsvr32 oleaut32.dll

regsvr32 /i eventcls.dll

regsvr32 vss_ps.dll

vssvc /register

regsvr32 /i swprv.dll

regsvr32 es.dll

regsvr32 stdprov.dll

regsvr32 vssui.dll

regsvr32 msxml.dll

regsvr32 msxml3.dll

regsvr32 msxml4.dll

After that confirm the VSS writers will get listed then we can perform the backup by using the VSS

Server:

Windows Server 2003

Backup Exec:

Backup exec 2010

Backup exec 12.5

Backup exec 11d

Backup exec 10d