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Event ID 1521 and 1511 on Windows server - Unable to browse file shares

We had a strange issue with some of our servers , we were unable to browse any fileshares
No error showed up , it seemed like the server kept trying and nothing showed up

We tried to access the Fileshare with IP's / DNS names / FQDN --  but nothing worked
However ping /RDP to file servers worked fine.

I tried rebooting the server (a couple of them) that had his issue but this did not solve the problem either.


I was seeing the following events in Application logs on some of our terminal servers which faced this issue (not all)

Event ID:1521

Windows cannot locate the server copy of your roaming profile and is attempting to log you on with your local profile. Changes to the profile will not be copied to the server when you log off. This error may be caused by network problems or insufficient security rights.

 DETAIL - The network path was not found.


Event ID:1511

Windows cannot find the local profile and is logging you on with a temporary profile. Changes you make to this profile will be lost when you log off.



A lot of suggestions online indicated Temp Profile issues , however in our case we have browsing issues on the server.


In the end it was found to be Cisco Nexus related issue , our core switch was facing problem (i do not know what actually was wrong ) , but when they failed over to another core switch everything started to work .

Hope this helps

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