Could not load file or assembly 'Microsoft.PowerBI.AdomdClient

HI,

I am experiencing the same issue, looks to have been just after I updated the personal gateway.

Does anyone have experience of rolling back to an earlier  version of the gateway software?

Thanks,

Chris

Baconbomb Having the same problem here. Please if you find the solution, share with us!

Baconbomb , I am also facing the same issue after updating the gateway

Having the same error after updating the personal gateway today. 

Same issue here since updating - all scheduled refreshes stopped working giving errors about not finding a table (the table it can't find seems to change as I repeatedly try refreshing and adjusting settings). Refreshing works fine in the desktop version.

That's good to know, thank you.

I ended up uninstalling the gateway and installing the previous version again as a work-around, but will retry the newest version this weekend.

I wasted a few days looking for a solution until I came across this article.

In short, you have to install MSOLAP, AMO, and ADOMD clients in all gateways machine (and also update gateway to the latest version). The article I linked has a more detailed step-by-step guide.

Hello, I had this issue on Power BI Desktop, while trying to refresh data.

• Had no issue on Semantic Model scheduled refresh, but same pbix file failed to refresh.
• Cleared permissions on Power BI Query Editor, but issue has been reoccuring after reload.
• My colleague successfully refreshed pbix file on desktop, since he was using previous Power BI Version.
• Cleared cache, reset Power BI Desktop but did not resolve.

Then, I have installed previous version (current: January 2026, previous: November 2025). And, SOLVED!

(I am aware of the fact that thread has opened on 2020, though you have visited page on 2026 -like me- then this might be helpful!)