I have been getting this error whenever I try to start Power BI Desktop.
It sits at the load screen for a while then give me that error.
I have tried uninstalling and reinstalling Power BI and running updates on my OS but nothing is working.
Could you provide details:
There is SQL Server Analysis Services (SSAS) instance behind each PBI file (new or existing one). Your error is 99% related to this SSAS engine.
One of cases can be that your firewall, brandmauer or anti-virus is blocking it. Refer to these links:
There is also an option to Send a frown. This button appears in most of cases near to error message. I don't see it in your case. I've sent it sometimes before and I have an e-mail address and some recommendation for you.
Prepare and send an e-mail:
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