VSS NTBackups failing with 0x8004230f error

I am having a problem with our main domain controller.  All of a sudden we cannot run any backups of this server using NTBackup.  It fails immediately with the following error report.

Backup Status
Operation: Backup
Active backup destination: File
Media name: "server1.bkf created 18/11/2008 at 08:33"

Volume shadow copy creation: Attempt 1.

Error returned while creating the volume shadow copy:0x8004230f.
Error returned while creating the volume shadow copy:8004230f
Aborting Backup.
---------------------
The operation did not successfully complete.
----------------------
backup Status
Operation: Backup
Active backup destination: File
Media name: "server1.bkf created 18/11/2008 at 08:34"
Volume shadow copy creation: Attempt 1.
Error returned while creating the volume shadow copy:0x8004230f.
Error returned while creating the volume shadow copy:8004230f
Aborting Backup.
---------------------
The operation did not successfully complete.
----------------------

I get no errors from running vssadmin list writers and I have tried re-registering the various DLLs as in the Microsoft document:

http://support.microsoft.com/kb/940032

In the event log I am seeing the following errors:

Event Type:      Error
Event Source:      VSS
Event Category:      None
Event ID:      12292
Date:            18/11/2008
Time:            08:22:13
User:            N/A
Computer:      SERVER1
Description:
Volume Shadow Copy Service error: Error creating the Shadow Copy Provider COM class with CLSID {790f2886-9889-4c99-8ef5-531add05d044} [0x8007007e].

Event Type:      Error
Event Source:      VSS
Event Category:      None
Event ID:      11
Date:            18/11/2008
Time:            08:22:13
User:            N/A
Computer:      SERVER1
Description:
Volume Shadow Copy Service information: The COM Server with CLSID {790f2886-9889-4c99-8ef5-531add05d044} and name SW_PROV cannot be started. [0x8007007e]



MostlyConfusedAsked:
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MostlyConfusedConnect With a Mentor Author Commented:
thanks for your post. I have resolved this issue now with a call to microsoft support as it became urgent.

The support technician connected to the server and ran the vssadmin list providers command. The out put showed a symantec snapshot vss provider listed along with the microsoft one. He took the GUID  and searched the registry for corresponding entries. He removed the entries and re ran vss list providers. I now showed just the ms provider. Backup now works perfectly.

I posted this in case it helps any one else. It turns out my issue was created by a symantec backup product installed which did not uninstall properly.

Could a moderator please close this question?
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MostlyConfusedAuthor Commented:
I forgot to add - This is Windows Server 2003 Standard 32 bit, SP1.

Thanks for any help you can give me on this; I am desperate to get the system state backed up here :(
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BrianConnect With a Mentor IT ManagerCommented:
Well it sure doesn't look like you are alone with this issue.  It seems to pop up quite a bit.  Here are couple places that might lead you to a solution.  

I just saw this from a different question here on EE.  http://www.experts-exchange.com/Operating_Systems/Windows_Server_2003/Q_21671129.html#a15522822

You also may want to recreate a new backup job and see if that one completes.  Perhaps the job is corrupted.

Brian

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AttilaKunCommented:
Excellent answer MostlyConfused. It helped with my issue!
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