Row Level Security for on prem analysis services stopped working

benmarriott I would recommend reading these blog posts.

https://powerbi.microsoft.com/en-us/documentation/powerbi-admin-power-bi-security/

https://powerbi.microsoft.com/en-us/documentation/powerbi-gateway-onprem-indepth/

I do recall reading somewhere about how to ensure that there is the mapping from the Power BI Service through to your On-Premise SSAS Tabular Model. I can remember that somewhere there is an option to actually do a manual mapping from a username through to a UPN in your organisation. I cannot just find the link right now.

I found it! And I think this is what you might need to do below.

https://powerbi.microsoft.com/en-us/documentation/powerbi-gateway-enterprise-manage-ssas/#map-user-names