Hi everyone,
I've been working with large queries in Power BI Dataflows for a long time, and many of them naturally exceed the 10-minute timeout limit for preview/evaluation.
To bypass this, I’ve always used the following workaround that worked perfectly until recently:
I started with a simple query (e.g., using TOP 1 or WHERE 1=0) so that the dataflow could be saved and published quickly.
Then, I went back into the Advanced Editor, replaced the query with the full version, and saved the dataflow without waiting for the preview to load.
The daily refresh would run fine — even with complex queries taking much longer than 10 minutes.
However, since March 2025, this no longer works.
Now, as soon as I replace the query with the full one, Power BI forces a new evaluation of "Potential Issues", which again attempts to run the preview — and of course, times out. I can't save the dataflow anymore unless the preview completes, which is impossible for large queries.
This change is heavily impacting my work, as we rely on several complex dataflows, and most of our queries exceed the 10-minute evaluation window.
Has anyone else experienced this change?
Was there any recent update that altered this behavior?
Is there a new way to bypass this forced query preview, as we used to before?
Thanks in advance for any help!
Best,