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Wednesday, September 9, 2015

Lync2013: Access is denied due to a role base access control (RBAC) authorisation failure.

Problem: You get error "Access is denied due to a role base access control ( RBAC ) authorization failure." when try to access Lync server 2013 control panel.

Error accessing control panel


Solution: This issue happens because built-in or domain administrator is not part of CsAdministrator group. To add the administrator account to Cs Administrator group, do following steps.



  1. Open Active Directory Users and Computers > Users > select builtin Administrator.
 
select Administrator
      2. Right Click Administrator account, select Add to a group.

Add to a group

      3. Type the name of the group which is CsAdministrator or type first two letter of the group name and click Check Names. If the group is found then click OK.

Enter group name 


      4. You will receive message for successful completion.

Successfully added to group

      5. Next we have to install Microsoft Silverlight 5.0 64 bit. 

 
Install silverlight 

      6. Now we can log on to Lync Server 2013 Control Panel.
 
Lync Server 2013 Control Panel

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