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Comments for event ID 12302 currently in the processing queue.

Note: We have not reviewed this information yet so it is unfiltered, exactly how it was submitted by our contributors.

Event ID: 12302
Event Source: VSS
Event Type: -
Event Description: -
Comment: In my case I was using VMware vCenter Converter 4.x to convert my local Windows XP system to a Virtual Machine.
I used the M940032 article commands and placed them in a batch file and then copied the batch file to the C:\Windows\System32 folder and finally ran the batch file from there.
All is good again and my system is converting to a VM as expected. Index: 4519
Event ID: 12302
Event Source: VSS
Event Type: Error
Event Description: 987654321
Comment: Sorry the description is in German. But it should translate into English as "An error occured while calling CoSetProxyBlanket."

The error happens during the backup of a W2K3 SP2 Server Standard Edition with a TSM client. MS hotfixes KB940349 and KB934016 are already installed.

In the error log of the TSM client is the following entry:
GatherWriterStatus(): pAsync->QueryStatus() returns hr=VSS_E_WRITER_INFRASTRUCTURE

Fix until now: None
Event ID: 12302
Event Source: VSS
Event Type: -
Event Description: -
Comment: I also got that mentionend event.
In my case the access to the system volume information folder was denied for the signed in user account. I just gave him full-access and the problem was solved. Index: 4519
Event ID: 12302
Event Source: VSS
Event Type: -
Event Description: -
Comment: KB940184 worked for me. I deleted HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79216}\Subscriptions key (and subkeys) and restarted the server. I've win2k3 64-bit EE SP2 running as VM on Win2k8 EE Hyper-v
Symptoms: When I select the 2k3 server in DPM SP1 (running on different server) for protection, it would pop up a error dialog box. VSS 12302 error would be logged on 2k3 server. Same error occurs if you run "vsadmin list writers" command which would return empty list. Index: 4519
Event ID: 12302
Event Source: VSS
Event Type: -
Event Description: -
Comment: I can confirm this worked for me, after I'd tried everything else:

To fix this problem do the following:
1. Backup the follwing regkey: HKLM\Software\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79216}\Subscriptions
2. Erase the regkey
3. Reboot.
4. Verify that things are working by running "vssadmin.exe list writers".
Index: 4519

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