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

[Baconbomb]

Could not load file or assembly 'Microsoft.PowerBI.AdomdClient, Version=15.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The system cannot find the file specified.

This is only when updating throught the service. From the desktop everything is working fine.

Gateway is updated to latest.

[EmirhanServeren]

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!)

[PakthurYangu]

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.

[chris_staines]

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.

[PowerBIPerson42]

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.

[NickTrent32]

I am having the same issue after updating the Personal gateway.

[NickTrent32]

After restarting the gateway, this error no longer occurred and I was able to refresh my datasets.

[PowerBIPerson42]

Agreed that it's working now - for me at least. I had tried restarting the gateway yesterday (under Service Settings) with no effect. When restarting today the manual refresh worked fine. Haven't tested a scheduled refresh.

[Anonymous]

Having the same error after updating the personal gateway today. 

[Anonymous]

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

[icervo]

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

[chris_staines]

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