Teams Android sign-in failures caused by Conditional Access
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A changed Conditional Access evaluation can block Teams Android devices from signing in. Check Entra sign-in logs and blocked resources before making targeted policy changes.
TL;DR
For Teams Rooms on Android, Teams Phones, Teams Displays and Teams Panels, Microsoft is changing Conditional Access evaluation in app version 1449/1.0.96.2026249711. If a resource-specific policy blocks a required resource, inspect interactive and non-interactive Entra sign-in logs, identify the resource and policy, then adjust only the relevant rule.
Original by Giuseppe Basirico, on MVPTreff. Read the original
This is our own summary, not a republication or full translation.
Governance takeaway
- Admins/CoE: Review interactive and non-interactive Entra sign-in logs for affected room accounts, identify the blocked resource and triggering Conditional Access policy before changing rules.
- Security/Compliance: Avoid blanket exclusions or disabling Conditional Access; validate targeted changes with a new sign-in and log review so security and room availability remain aligned.
Frequently asked questions
Which Teams Android devices can be affected by resource-specific Conditional Access policies?
Teams Rooms on Android, Teams Phones, Teams Displays and Teams Panels can be affected when required resources are blocked. The account’s required resources determine exposure.
Which Entra sign-in logs should I check for a Teams Rooms Android sign-in failure?
Check both interactive and non-interactive Microsoft Entra sign-in logs for the room resource account or device account. Review the details of failed sign-ins.
How do I identify the Conditional Access policy blocking a Teams device resource?
Inspect the failed sign-in’s blocked resource, error code and cause, then review Conditional Access details to identify the policy. Recheck the sign-in afterward.