Power BI Refresh Issue (OLE DB or ODBC error: [DataSource.Error]... Timed out)

Hello,

I am experiencing an ongoing issue when trying to load data from our Fabric Data Warehouse into Power BI.

For quite some time, I have been unable to successfully load or refresh data from the Fabric warehouse. The process consistently fails with the following error:

> Failed to save modifications to the server. Error returned:
> 'OLE DB or ODBC error: [DataSource.Error] Microsoft SQL: A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The wait operation timed out.). An unexpected exception occurred.'

**Troubleshooting Steps Taken:**

* Verified that the data itself contains no errors or inconsistencies that could cause this issue.
* Tested using my user credentials on different machines (located in Greece/Athens) — the data loads quickly and successfully there.
* Confirmed that other users with identical permissions can access and refresh the data without issues.
* Worked with our Information Security team to verify that all required permissions and access configurations are correctly set.
* Attempted both:

* Full refresh (data + schema)
* Loading via “Transform Data”
→ The issue occurs in both scenarios.
* Created Environment Variable:

* Name: `PBI_SQL_TRUSTED_SERVERS`
* Value: [Fabric server address]
→ This did not resolve the issue.

Additional Notes:

* The issue appears to be environment-specific, as it only occurs on my machine/location.
* The error suggests a timeout during the SSL pre-login handshake phase, which may indicate a network, TLS, or local configuration issue.