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Power Query Aggregate not loading

I am attempting to aggregate a merged query but the preview has been "loading" for 10 minutes now (expanding the table only takes 15 seconds) When I try to apply without seeing the preview, it gets stuck after loading about 1/3 of the rows. Is there something I am doing wrong?

Community Support
Community Support

Hi @mwhalen ,


You may try to disable "background refresh".1.png


If you don't want to refresh or load for specific reports in power bi desktop, you can disable the following options.



Also you can try Table.Buffer to performance.


About more details, please kindly refer to

Speed/Performance aspects – The BIccountant

Table.Buffer for cashing intermediate query results or how workaround Unnecessary Queries Issue (mic...                                                                            


Best Regards,

Stephen Tao


If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.           


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