|3151 - The user could not be authenticated. MICROSOFT|
Analysis Services returns this message when a client attempts to connect to the server and the server is unable to authenticate the client. This usually occurs if the client and the server are in different Microsoft Windows® domains that do not have a trust relationship. This message can also appear when a client is trying to connect over the Internet.
Ensure that there is a trust relationship between ... Login to see more
SQL Server Analysis Services (SSAS)