Test-CSEXStorageConnectivity returning error code=5

In some scenarios during the integration tests between Skype for Business Server 2015 and Exchange Server 2013 we may see the error code=5 in the output of the Test-CSEXStorageConnectivity.


When testing the integration (Server to Server Authentication S2SOAuth) between Skype for Business and Exchange Server 2013, you may get the following error, as shown in the figure below.

Test-CSEXStorageConnectivity: EXCreateIteam exchange operation failed, code=5, reason=#CTX{ctx:{traceId:


A possible solution for this error is to have the user that is running the cmdlet as part of the RTCUniversalUserAdmins as shown in the picture below.