SharePoint Event ID 3351 – Login failed for user ‘NT Authority/Anonymous Logon’

13 05 2009

I have noticed the above error keeps popping up in the Application event log of our SharePoint server so I decided to track down the problem. Initially I thought it might be application pool based but it turns out it is the ‘Microsoft SharePoint Services VSS Writer’ service that is causing the problem.

I found the solution over at the TechNet forums –

http://social.technet.microsoft.com/Forums/en-US/sharepointadmin/thread/7efeefce-129e-4a03-9ff7-900d6168952b

It seems the solution is to change the identity for the service to run under the SharePoint Active Directory  farm account rather ‘local system’ which is the default.

After you change the identity, restart the service and the error should no longer keep bothering you.

Hope this helps someone! 🙂

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3 responses

9 07 2009
Troop

Thanks!! I just made the change…so time will tell if this actually does the trick.

24 05 2010
V Ha

Just made the change, this is occuring every hour.

1 06 2010
Georg

Thanks a lot, we had problems deploying WebParts with VisualStudio 2008.

Setting the rights of the IIS node VSeWSS to the Sharepoint admin account helped.

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