Hi @Davidoj ,
Power BI is the superset of SSRS, so the possible reasons for not working is really similar
Couldn't fully understand your meaning of reports that are not working.
Do you mean that when you run a report it couldn't render by long time?
Or when you run the report, it will show the error message such as rsAccessDenied,rsInternalError.
There are many reasons for reports not working.
For the first scenario, please check the excution log3 for detail messages to see which spent it cost long time for.
For the second scenario, you may do further analysis based on error messages.
Here are some official documentations for your reference.
Regards,
Zoe
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