Issue with refreshing the Power BI

Hi, Anonymous 

Based on your description, you are experiencing issues when refreshing Power BI reports. The error code usually indicates a timeout issue during query execution. Here are some solutions you can try (be sure to back up your data before making any changes).

1. Increase the CommandTimeout and ConnectionTimeout parameters. The default value for CommandTimeout is 10 minutes and the default value for ConnectionTimeout depends on the driver. These values can be changed in Power Query.

Related link:Solved: DM_GWPipeline_Gateway_TimeoutError - Microsoft Fabric Community

2. Check the resources of the computer running the gateway to ensure that the computer running the gateway has enough hard disk space and available RAM.

3. Look at the data model and queries. Large, complex data models or inefficient queries may cause timeouts. Consider optimizing data models and queries to improve performance.

4. Network latency or instability may cause a timeout. If possible, test with an alternative network connection to see if the problem persists.

Best Regards,
Yang
Community Support Team

If there is any post helps, then please consider Accept it as the solution to help the other members find it more quickly.
If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

How to get your questions answered quickly --  How to provide sample data in the Power BI Forum