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Enable-CsUser : Cannot open database "xds" requested by the login. The login failed.

Issue: Unable to enroll Lync user.
Error: Enable-CsUser : Cannot open database "xds" requested by the login. The login failed. Login failed for user '...'.
Problem Statement:
While enabling user for Lync, getting above error message. Even user has Lync admin permission however getting above error.
I have CsAdministrator group permission however still getting above error while enabling user for Lync.
When I checked it properly then I found resolution.
Basically you must have of a group permission from CsUserAdministrator, CsServerAdministrator or CsAdministrator. Apart from that you must have RTCUniversalServerAdministrator group permission in order to enroll the Lync user or update data to “xds” database. 

I have added my user to RTCUniversalServerAdministrator group and run the following command again.
C:\> Enable-CsUser –Identity “mydomain\Baluilag” –Registararpool “” –SipAddressType “EmailAddress” –SipDomain “”
Now user got successfully enrolled for Lync.

Thank you.


  1. This was super helpful, thanks for posting. I had a task I had a service account trying to run but got this error, now it's working!

  2. Hi Balu, Thank you so much this was just what I needed!


  3. Very informative error.Thank you author for posting this kind of errors .

    Both are really good.


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