A cloud-based identity and access management service for securing user authentication and resource access
Power BI is being blocked because token protection support is limited and browser-based applications are not supported in the Windows token protection guidance. Power BI Desktop is listed as a supported application, but browser-based apps are not.
For a fix, check how Power BI is being accessed:
- If access is through a browser
- This is expected to fail with token protection in the Windows deployment guidance because browser-based applications are not supported.
- If the Conditional Access policy includes Browser, remove that selection for the Windows token protection policy.
- In the Windows policy configuration, under Client apps, only select Mobile apps and desktop clients.
- Leaving Browser selected can block web apps.
- If access is through Power BI Desktop
- Power BI Desktop is supported, so verify the client is current.
- Older Power BI Desktop versions can have sign-in issues. Update to the latest version, restart Power BI Desktop, and sign in again.
- If sign-in still fails, in Power BI Desktop go to:
- File > Options and settings > Options > Security
- Enable Use updated sign-in experience for data sources
- If Use my default web browser is enabled on an older version, clear it, restart Power BI Desktop, and sign in again.
- Review the Conditional Access policy mode
- Set the token protection policy to Report-only first.
- Then review Sign-in logs in Microsoft Entra admin center:
- Entra ID > Monitoring & health > Sign-in logs
- Add the Token Protection – Sign-in session status code column
- Review the Conditional Access or Report-only tab for the blocked sign-in
- Check Session controls to confirm whether token protection requirements were satisfied
- Check Basic info > Token Protection - Sign-in Session
- If this policy is intended for web scenarios such as ARM only
- The web-app preview guidance is specific and requires Browser only for that scenario.
- That guidance does not establish general browser support for Power BI. Do not use the web-app preview settings as a general template for Power BI.
In short: for Windows token protection, use a separate Conditional Access policy that targets only supported client types and supported apps. For Power BI, token protection is supported for Power BI Desktop, not general browser access.