Error generating an asymmetric key

Hmm, there are quite a few similar posts:

https://www.bing.com/search?q=Power+BI+gateway+error+generating+an+asymmetric+key&form=QBLH&sp=-1&pq=power+bi+gateway+error+&sc=3-23&qs=n&sk=&cvid=CCA16A1F2E7141E89DF4C4C0CC54349F

This this one:

https://community.powerbi.com/t5/Service/quot-Error-generating-an-asymmetric-key-Key-not-valid-for-use-in/td-p/821532

https://docs.microsoft.com/en-us/power-bi/service-gateway-onprem-tshoot

If none of that is useful, You could check the Issues forum here:

https://community.powerbi.com/t5/Issues/idb-p/Issues

And if it is not there, then you could post it.

If you have Pro account you could try to open a support ticket. If you have a Pro account it is free. Go to https://support.powerbi.com. Scroll down and click "CREATE SUPPORT TICKET".