Dataflow refresh limit on concurrent refreshes exceeded

Hi Anonymous,

Our Dataflows Gen 1 also started failing since the last 5-6 days after which we found out that Microsoft has now enforced new limits on Power Query evaluations, starting June 1st 2026.

Hence that's why you suddenly start seeing failures recently.

As per the new Power Query limits, for shared workspaces, this limit was documented to be at 8 hours of evaluation time per day. However, this limit was not enforced and the enforcement was enabled on June 1st 2026. Due to this enforcement, people are seeing the account limit refresh error across our organisation as well.

This means within a 24-hour period. Each user is permitted up to 8 dataflow refreshes in the shared workspace capacity. For instance, if each dataflow takes 1 hour to refresh, you can refresh a maximum of 8 dataflows within the 24-hour rolling window. 

The product team has recently introduced this new limitation regarding refresh behaviour for dataflow gen 1 and they have confirmed that this is an intentional by design change. 

To address this issue, either reducing the number of data flow refreshes per day will help or migrating your workspace to a premium capacity which provides a limit of 100 refresh hours per user within a 24-hour holding window can help. 

Or otherwise -

• reducing complex power query transmissions
• Improving query folding
• lowering refresh frequency
• avoiding multiple concurrent refreshes
• moving to data flow gen 2 on fabric capacity 

These are some of the things we are exploring as well at the moment.

Let me know if it helps!