Data Gateway (DM_GWPipeline_UnknownError)

Hi, HurleyWave 

First of all, sorry for my late reply. Thank you very much for your reply. I looked up information like this, and when connecting to SSAS data sources, the Power BI gateway only supports Windows authentication.
The Windows account you enter must be a member of the Server Administrator role on the instance of Analysis Services you want to connect to. If the password for this account is set to expire, the user will receive a connection error unless you update the data source password.

You open the link below and use the method mentioned in the document to get your correct account number.

Manage SQL Server Analysis Services data sources - Power BI | Microsoft Learn

Best Regards

Jianpeng Li

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