Failed to log on to Microsoft Dynamics (when trying to print Reports)

After setting up SSRS as extra instans accordingly to below guide.

technet.microsoft.com/.../hh389760.aspx

First i had problems with deployment of reports. (se my other post)

"Publish Reports on Single Server with multiple SSRS instances".

But after using the powershell command with string -ServicesAOSName XX@AOSServerName -ServicesAOSWSDLPort 810X it worked to deploy reports.

But now when i try to print report i get error "Failed to log on to Microsoft Dynamics".

Something is not connected correctly between reporting services and ax ?.

I use the same Account (domain) for BC Proxy,SSRS Service Account and SSRS Execution account.