Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more

Reply
Syndicate_Admin
Administrator
Administrator

Error. When I try launch PBI Desktop. Unable to establish a connection. Make sure the server is run

Hi there. When I try to launch Power BI Desktop I get this error message.
Unable to establish a connection. Make sure the server is running.
Error. Failed to connect to 127.0.0.1 port 3333: Timed out.))
It was working perfectly, and out of nowhere this error started.
Thanks for the help! The next mondey I´m must deliver my analysis and I'm in trouble

1 REPLY 1
v-easonf-msft
Community Support
Community Support

Hi, @Syndicate_Admin 

It may be blocked by your firewall /antivirus software. 

You can refer to these similar links for more details.

Unable-to-start-Power-BI-Desktop-A-connection-cannot-be-made 

Unable-to-open-PowerBI-Desktop-A-connection-cannot-be-made 

Unexpected-Error-A-connection-cannot-be-made-Ensure-that-the 

Best Regards,
Community Support Team _ Eason

 

Helpful resources

Announcements
Power BI DataViz World Championships

Power BI Dataviz World Championships

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!

December 2025 Power BI Update Carousel

Power BI Monthly Update - December 2025

Check out the December 2025 Power BI Holiday Recap!

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.