Event ID - 1521

Event Id1521
SourceUserenv
DescriptionWindows 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 logoff. Possible causes of this error include network problems or insufficient security rights. If this problem persists, contact your network administrator. DETAIL - Windows cannot find the network path. Verify that the network path is correct and the destination computer is not busy or turned off. If Windows still cannot find the network path, contact your network administrator.
Event InformationAccording to Microsoft :
Cause :
The system cannot get the roaming user profile because it cannot connect to the server holding the roaming profile folders. This might be caused by network connectivity issues or insufficient security permissions on the user's roaming profile folders that are stored on the server.

If you use NetBIOS over TCP/IP (NetBT) to connect to your network and you have a roaming user profile, this might cause network connectivity issues.
Resolution :
To troubleshoot this problem, try the following:
1.Verify that the network path is correct and the server is available and on the network. If Windows still cannot find the network path, contact your network administrator.
2.Ensure that permissions are set correctly on the user's roaming profile folders that are stored on the server.
Reference LinksEvent ID 1521 from Source Userenv

Catch threats immediately

We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.

See what we caught

Did this information help you to resolve the problem?

Yes: My problem was resolved.
No: The information was not helpful / Partially helpful.