2030555 - EPM Add-in: Error when trying to log in: Wrong authentication. (You are not authorized to access this system; contact your system administrator)

When attempting to log in to SAP Business Planning and Consolidation (BPC) via the EPM Add-in the following error is displayed:

Wrong authentication

Detail:

code:
severity: error
description: You are not authorized to access this system; contact your system administrator
log id:
-----------------

Framework message:
The remote server returned an error: (401) Unauthorized.

In the tbllogs table the following entry is collected:

==============[System Exception Tracing]==============  [System  Name] : /SAP/BPC/Appsets.svc  [Message Type] : ErrorMessage  [Job Name]     : CheckAccessSecurity  [DateTime]     : 06/13/2014 15:05:37  [UserId]       : DOMAIN\username  [Exception]       DetailMsg  : {You are not authorized to access this system; contact your system administrator(UserID: [DOMAIN\username], Appset: [], Application: [])}  ==============[System Exception Tracing  End ]==============

• SAP Business Planning and Consolidation version 10 for Microsoft

KBA , EPM-BPC-MS , Microsoft Version , EPM-XLS , EPM Excel Client , Problem