Microsoft Teams Android Devices: Review Your Conditional Access Policies Microsoft has announced an important update (MC1478962) that may impact sign-ins on Microsoft Teams Android devices, including: Teams Rooms on Android, Teams Phones, Teams Displays, Teams Panels
Note – You can find this MCPOST in Microsoft 365 admin center > Health > Message Center.
As part of ongoing security enhancements, Microsoft is introducing stricter Conditional Access policy evaluations for Teams Android devices running version 1449/1.0.96.2026249711.
Rollout Timeline
- Started: Late September 2026
- Expected Completion: Mid-October 2026
What does this mean?
Organizations using resource-specific Microsoft Entra Conditional Access policies may experience sign-in issues if certain backend resources are inadvertently blocked.
Recommended Actions
If your organization has Conditional Access policies targeting resources, consider reviewing:
- Microsoft 365 App Catalog Services
- Marketplace Extensions Runtime
- Office Voice Front Door
These resources may need to be added to your policy exclusion list, depending on your configuration.
Troubleshooting Tips:
- Review interactive and non-interactive Microsoft Entra sign-in logs.
- Identify the specific resource blocked by Conditional Access.
- Validate which policy is causing the block before making changes.
- Monitor Teams Android device sign-in behavior during the rollout.
Why this matters Many administrators focus on user-facing applications, but backend service dependencies can also be affected by Conditional Access controls. Proactively reviewing policies can help avoid disruptions to meeting rooms, conference devices, and shared workspaces. Security and usability should go hand in hand. A quick policy review today can help prevent sign-in challenges tomorrow.