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0xe0001904 - A failure occurred querying the Writer status

Created: 31 Jan 2013 • Updated: 01 Feb 2013 | 4 comments
This issue has been solved. See solution.


Backup job has been failed due to "0xe0001904 - A failure occurred querying the Writer status" error.

A review of the event logs on the Exchange server at the time of the failure reports:

Event ID : 9840 

Event ID: 9814

Event ID: 9609

As per article -

I have restarted the Exchange server.  But still i have received the above event id' even after server reboot.

All the VSS writers are in stable state now.

Server OS = windows 2008

Exchange server = Exchange 2007

Job log Error as below:

Backup- FTL4V-79-57344-6404 - AOFO: Initialization failure on: "\\XYZ\Microsoft Information Store\First Storage Group". Advanced Open File Option used: Microsoft Volume Shadow Copy Service (VSS).

Snapshot provider error (0xE0001904): A failure occurred querying the Writer status.  Writer Name: Exchange Server, Writer ID: {76FE1AC4-15F7-4BCD-987E-8E1ACB462FB7}, Last error: The VSS Writer failed, but the operation can be retried (0x800423f3), State: Failed during prepare snapshot operation (8).

There is sufficient Free space available on all System drives.

Please let me know why backup job is still failing....


Santosh Pawar

Comments 4 CommentsJump to latest comment

VJware's picture

If AOFO is explicitly enabled in the backup job properties, disable it. Ensure the backup is not conflicting with the exchange maintenance schedule either.

Lastly, try this KB as well ~

pkh's picture

Issue this command in a command prompt.

vssadmin list writer

If there are any writers that have errors, you need to restart the server to clear the errors.

santoshpawar's picture

Thanks for the reply......

All the VSS writers are in stable state....

Now i have reselected the Exchange resources from backup job selection list..and manually fired the backup job which is now in running state having increasing byte counts..

I will update you the status...once backup job get completed...


Santosh Pawar

santoshpawar's picture

After re-selecting the Exchange resources backup job completed successfully.