SharePoint 2007 SP2 VSS backup error ?

Hi Everyone,

I've been getting this error below all the time regarding the VSS backup error in the event viewer, eventhough the VSS Writer status got no error in the cmd prompt.

and also Symantec Backup Exec 2010 R2 agent got error in backup the farm using the DOMAIN\SPService username which is the owner of this WSS_ContentDB and also member of the Farm admin group.

can anyone share your experience here to fix this error please ?

Thanks,
JJ

Log Name:      Application
Source:        Windows SharePoint Services 3
Date:          8/09/2010 10:11:31 PM
Event ID:      3760
Task Category: Database
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      MOSSDEV01.domain.com
Description:
SQL Database 'SharePoint_AdminContent_f632e5bf-cbd9-4d9f-a819-1811feb4f2b6' on SQL Server instance 'MOSSDEV01\MOSSDB' not found. Additional error information from SQL Server is included below.

Cannot open database "SharePoint_AdminContent_f632e5bf-cbd9-4d9f-a819-1811feb4f2b6" requested by the login. The login failed.
Login failed for user 'DOMAIN\Administrator'.
#########################################################################################################################################################
Log Name:      Application
Source:        VSS
Date:          8/09/2010 10:08:52 PM
Event ID:      12289
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      MOSSDEV01.domain.com
Description:
Volume Shadow Copy Service error: Unexpected error RegOpenKeyExW(-2147483646,SYSTEM\CurrentControlSet\Services\VSS\Diag,...).  hr = 0x80070005. 

Operation:
   Initializing Writer

Context:
   Writer Class Id: {8d5f38cd-fb7a-49ca-ae1b-21d1f017d8f9}
   Writer Name: OSearch VSS Writer
   Writer Instance ID: {b87cc4be-935b-4479-ac5d-618a41767a0f}
#
#----------------------------------------------------------------------------------------------------------------------------------------------------# 
#Command Prompt
#----------------------------------------------------------------------------------------------------------------------------------------------------#
# 
C:\Windows\system32>vssadmin list writers
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2005 Microsoft Corp.

Writer name: 'System Writer'
   Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}
   Writer Instance Id: {34de22c6-4a77-4af6-9ae6-1b4eee4d629b}
   State: [1] Stable
   Last error: No error

Writer name: 'SqlServerWriter'
   Writer Id: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}
   Writer Instance Id: {c6074e09-4962-4290-9639-d8cc7d08f644}
   State: [1] Stable
   Last error: No error

Writer name: 'WMI Writer'
   Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
   Writer Instance Id: {76d8b78a-0c87-464f-b538-4fee7c515f42}
   State: [1] Stable
   Last error: No error

Writer name: 'ASR Writer'
   Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
   Writer Instance Id: {45b2f7f5-91e6-4607-a6df-ef85bebe8770}
   State: [1] Stable
   Last error: No error

Writer name: 'COM+ REGDB Writer'
   Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
   Writer Instance Id: {48f71749-817b-4f11-b97a-1f63f525626e}
   State: [1] Stable
   Last error: No error

Writer name: 'SPSearch VSS Writer'
   Writer Id: {57af97e4-4a76-4ace-a756-d11e8f0294c7}
   Writer Instance Id: {9f4ab399-ff20-4dae-9063-7b737d52edd3}
   State: [1] Stable
   Last error: No error

Writer name: 'Shadow Copy Optimization Writer'
   Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
   Writer Instance Id: {e9efb4dd-8e77-42c1-90ef-55b879ee60b2}
   State: [1] Stable
   Last error: No error

Writer name: 'Registry Writer'
   Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
   Writer Instance Id: {db5e3151-2f42-4aa7-acb7-b1ffe169cd2a}
   State: [1] Stable
   Last error: No error

Writer name: 'OSearch VSS Writer'
   Writer Id: {8d5f38cd-fb7a-49ca-ae1b-21d1f017d8f9}
   Writer Instance Id: {b87cc4be-935b-4479-ac5d-618a41767a0f}
   State: [1] Stable
   Last error: No error

Writer name: 'IIS Config Writer'
   Writer Id: {2a40fd15-dfca-4aa8-a654-1f8c654603f6}
   Writer Instance Id: {9f5a29f8-93f8-48a6-8330-605423ad951b}
   State: [1] Stable
   Last error: No error

Writer name: 'IIS Metabase Writer'
   Writer Id: {59b1f0cf-90ef-465f-9609-6ca8b2938366}
   Writer Instance Id: {c9bc929c-4357-4028-81d6-8b48e6b65c13}
   State: [1] Stable
   Last error: No error

C:\Windows\system32>

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error.jpg