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Azure Databricks sign-in issue – repeated session expiry and AADSTS90015

Sam Krish 10 Reputation points
2026-03-19T01:03:03.1333333+00:00

Azure Databricks workspace is repeatedly forcing reauthentication after a few minutes, and then fails with the following error:

AADSTS90015: Requested query string is too long

This issue has been occurring for the last few days. Before that, the workspace was working normally.

I have already tried the following, but the problem persists:

  • clearing browser cache and cookies

using different browsers

  • using incognito/private mode

Because the session expires repeatedly, the Databricks environment has become effectively unusable.

Could you please help advise how to fix this Microsoft Entra ID / Azure Databricks sign-in flow issue for the Azure Databricks workspace?

Screenshot 2026-03-19 090427

Screenshot 2026-03-19 090333

Azure Databricks
Azure Databricks

An Apache Spark-based analytics platform optimized for Azure.

2 answers

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  1. SAI JAGADEESH KUDIPUDI 1,600 Reputation points Microsoft External Staff Moderator
    2026-03-20T18:30:19.63+00:00

    Hi Sam Krish,
    We are aware that several users are encountering the AADSTS90015 (Requested query string too long) error when attempting to sign in to Azure Databricks.

    From the observed behavior—such as intermittent login success, impact across multiple tenants, and session drops—this indicates a service-side authentication issue involving Microsoft Entra ID and the Databricks sign-in flow, rather than a misconfiguration within individual workspaces.

    As interim mitigation, you may try the following:

    Access the workspace using its direct workspace URL instead of regional links or saved bookmarks

    Clear browser cache and cookies, or use an Incognito/Private browsing session

    Ensure only one account session is active during sign-in

    Test with a different browser to rule out session-related inconsistencies

    If the issue persists, collect the Request ID, Correlation ID, and Timestamp from the error page and share them when contacting support. These details will assist the service team in analyzing the backend authentication flow.

    We are actively tracking similar occurrences and will provide updates as more information becomes available.

    Thank you for your understanding.

  2. Q&A Assist
    2026-03-19T01:03:21.5566667+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    The behavior described (very frequent reauthentication and AADSTS90015 during Microsoft Entra ID sign‑in to Azure Databricks) is not covered in the provided documentation. The context only describes:

    • How to control whether Azure Databricks personnel can access a workspace.
    • How to configure and authenticate JDBC connections to Azure Databricks.
    • Generic Microsoft Entra/AD FS sign‑in troubleshooting for federated users, which does not mention AADSTS90015 or Databricks-specific session behavior.

    Because of this, no Databricks‑specific or AADSTS90015‑specific remediation steps can be given based on the available information.

    References:

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