Power BI Service – OAuth2 Databricks Authentication Failing After Tenant Migration

naveens — Mon, 15 Sep 2025 14:55:00 GMT

Hi,

We are working on Power BI migration from INFY to TATA.
I have a user TATA.nato@tata.com.
a. with this user Iam able to connect to Azure databricks using Power BI desktop in INFY tenant.

b. Iam logged in as TATA.nato@tata.com and switched to tenant INFY in Power BI.
But when i come to Power BI service, its giving error when login with Oauth2.

Failed to update data source credentials: [Microsoft][ThriftExtension] (14) Unexpected response from server during a HTTP connection: Unauthorized/Forbidden error response returned, but no token expired message received.Hide details
Status code: 400

Any help would be appreciated.

Note:
Earlier i was able to connect with email id TATA.nato@TATA.onmicrosoft.com
Weeked they change the userid TATA.nato@TATA.com

Thank you.

Re: Power BI Service – OAuth2 Databricks Authentication Failing After Tenant Migration

nayan_wylde — Mon, 15 Sep 2025 15:23:57 GMT

@naveens here are few things that you can try.

1. Re-authenticate in Power BI Service

Go to Power BI Service → Settings → Data Sources.
Locate the Databricks data source.
Click Edit Credentials.
Choose OAuth2 and re-authenticate using the correct Azure AD account (TATA.nato@tata.com) under the INFY tenant.

2. Clear Cached Credentials

3. Verify Azure AD Permissions

Ensure TATA.nato@tata.com has access to the Databricks workspace in the INFY tenant.
Check if the user is assigned to the correct Azure AD group or Databricks workspace role.

topic Power BI Service – OAuth2 Databricks Authentication Failing After Tenant Migration in Data Engineering

Power BI Service – OAuth2 Databricks Authentication Failing After Tenant Migration

Re: Power BI Service – OAuth2 Databricks Authentication Failing After Tenant Migration

1. Re-authenticate in Power BI Service