← All Power BI refresh errors
Connectivity
Login timeout expired
Error code: sql-login-timeout
Power BI dataset refresh error — what it means and how to fix it.
What this means
The SQL connection could not be established in time (network unreachable, firewall, or a slow server).
How to fix it
- Confirm the server is reachable and port 1433 is open.
- Verify the instance name and the SQL Browser service.
- Raise the connection timeout.
Related connectivity errors
- DM_GWPipeline_Gateway_DataSourceAccessError
- DM_GWPipeline_Gateway_MashupDataAccessError
- The server was not found or was not accessible (SQL error 40)
- Connection denied — Deny Public Network Access (Azure SQL)
- The certificate chain was issued by an authority that is not trusted
- The server name doesn't match the SQL Server SSL certificate
Catch this automatically
RefreshRadar monitors every Power BI dataset refresh and alerts you the moment one fails — with the likely cause and the fix — so you never hear about a broken refresh from your stakeholders first.
Start free