Get certified for free when you join Fabric Data Days 2026 and dive into Fabric, Power BI, SQL, AI, and other essential data skills.
Join nowData Days is here! Join us now for 60+ days of learning, challenges, and connection. Learn more
There was an error when processing the data in the dataset.
Can anyone suggest me why this error happening and solution.
Hi @PremK
Can you tell me if your problem is solved? If yes, please accept it as solution.
Regards,
Nono Chen
Hi @PremK
Based on the image description you provided, the error messages you are experiencing include "DM_GWPipeline_Gateway_MashupDataAccessError" and "DM_ErrorDetailNameCode_UnderlyingHResult", as well as the error code "-2147467259". UnderlyingHResult", and error code "-2147467259".
These are usually related to data gateway connectivity issues.
The following are possible solutions:
Check Firewall Restrictions: Make sure there are no firewall settings preventing the data gateway from connecting.
Restart the server: Sometimes, restarting the server hosting the data gateway or data source can solve the problem.
Check Data Gateway Configuration: Ensure that the Data Gateway is properly configured and connected to the correct data source.
Check credentials: Verify that the credentials used to connect to the data source are correct and have not expired.
Regards,
Nono Chen
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Don't miss out on Data Days, June 15 through August 7. Learn Fabric, Power BI, SQL, AI and more.
Check out the May 2026 Power BI update to learn about new features.
| User | Count |
|---|---|
| 16 | |
| 10 | |
| 10 | |
| 8 | |
| 7 |
| User | Count |
|---|---|
| 41 | |
| 36 | |
| 36 | |
| 28 | |
| 20 |