Unable to create username mapping

Unable to create username mapping

 

We got a scenario where an administrator was unable to create username mapping. He was getting the following error messages in event logs.

 

Log	Source	Type	ID	Description
Application	mapsvc	Error	8259	Failed to create simple group maps for the map definition <domain name> - pcnfs since the nt groups could not be loaded.
Application	mapsvc	Error	8257	Failed to create simple user maps for the map definition <domain name> - pcnfs since the nt users could not be loaded.

 

 

Even after creating advanced username mapping, the information is not getting displayed if you run mapadmin list –all command or even if you try to see it from the GUI.

 

                                                                               

To make the scenario more complicated, the registry keys were actually getting populated:

HKLM -> System -> CurrentControlSet -> Services -> Mapsvc -> CurrentVersion:

AdvancedUserMaps and

AdvancedGroupMaps

 

Be default, username mapping service is started by “Local System” account. We change the setting and configure it to start using “domain admin” account.

 

 

 

This resolves the issue!