Connection to datamart broken

[JS23]

Hi all,

I have a datamart in Fabric. I succesfully connected an Excel file to this datamart by doing the following:

- Copy the SQL connection string

- In Excel - GetData - FromDatabase - FromSQLServerDatabase --> paste the connection string

- Connect using 'Micorosoft account'

So far so good. Data comes in. Refreshable, all good...

Suddenly the connection broke and I get the following error message:

QUOTE

DataSource.Error: Microsoft SQL: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - An existing connection was forcibly closed by the remote host.)
Details:
DataSourceKind=SQL
DataSourcePath=...(intentionally deleted this part)

Message=A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - An existing connection was forcibly closed by the remote host.)
ErrorCode=-2146232060
Number=10054
Class=20

UNQUOTE

Trying to connect from another machine, from a blank Excel file, from PBI Desktop...nothing works, I simply cannot get connected anymore.

Any ideas?

thx

Jan

[Murzao]

 ‼️ Microsfot wants to retire the Datamart. Please see the link below and make your comments if not satisfied: 

Unify Datamart with Fabric Data Warehouse! | Microsoft Power BI Blog | Microsoft Power BI

[Anonymous]

Thanks for the reply from FarhanJeelani, please allow me to provide another insight.
Hi @JS23 ,

You can try connecting using the Windows account instead of the Microsoft account.
Also, please refer to the following link which documents this error.
Errors when applications try to connect to SQL Server in Windows - Windows Server | Microsoft Learn

Best Regards,
Dengliang Li

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[FarhanJeelani · Accepted solution]

The error you’re seeing typically occurs due to SSL/TLS handshake issues between your client (Excel or Power BI) and the datamart server. Here are some steps to troubleshoot:

1. Verify Credentials: Double-check that your Microsoft account has permission to access the datamart.

2. Check Network and Firewall: Ensure no firewall or network security rule is blocking the connection.

3. Update Excel and Drivers: Make sure Excel, Power BI, and SQL Server drivers are up-to-date, as updates often fix SSL issues.

4. Connection String: Confirm that the SQL connection string is correctly formatted and hasn't changed.

5. SSL/TLS Settings: Check if your organization has updated security protocols that could affect SSL/TLS versions.

If the issue persists, reach out to your IT team or Microsoft support for further assistance, as server-side configuration changes may be required.