Can't connect to Dataflows

JIGAR 

The latest version works fine for me. You may also try earlier versions from Power BI updates archive.

I am experiencing the exact same issue. 

v-chuncz-msft  This is an issue with the service. I already downgraded my client with no success. We use a GCC tenant. Based on the number of votes of the two "hot" issues, it's clear there is a problem. 

Same issues here in a GCC tenant. The solution that finally worked for me is I cleared all data source permissions while in the April release, uninstalled, and then reinstalled the March 2021 release. After that I was able to refresh from my dataflows again. 

Even I had to uninstall the April 2021 release and then re-install the March 2021 release. 

Only after that I was able to work with my dataflows again. 

From the error message it looks like a .dll file of some kind is missing from the newly packaged release. 

I have only installed the april version after i discovered the error. I was hoping the old version was causing the issue. This does not seem to be the case. Clearing Data-Source privileges  didnt help either. 

I have the same issue

unable connect to the right account, couldn't recognize the credential of account under @xxxx.partner.onmschina.cn

same here - what to do?