Forum Discussion
chetanoptimus
Sep 01, 2025Copper Contributor
Enabling Cross-Tenant Authentication for Teams Apps with Single-Tenant Bot
Hello Team,
I am working on implementing authentication for a Teams application using the Microsoft 365 Agents SDK. Following Microsoft’s current guidance, I have:
- Registered a single-tenant Azure AD bot.
- Integrated Azure AD authentication.
- Prepared for AppSource distribution as the long-term supported method for cross-tenant availability.
However, I am still facing challenges in reliably enabling sign-in for external users from other tenants. Specifically:
- The cross-tenant sign-in flow remains unclear.
- Validating authentication across multiple tenants is difficult without official end-to-end guidance.
- Existing samples and documentation primarily address single-tenant or internal-only scenarios.
As of now, authentication for external users is still difficult to get working and validate consistently across tenants.
Could you provide detailed guides, samples, or best practices for:
- Enabling authentication for external users in this single tenant + AppSource distribution model.
- Recommended patterns for testing cross-tenant authentication before AppSource submission.
- Any roadmap considerations for simplifying this scenario.
This would help ensure Teams apps can meet compliance requirements while still delivering a smooth sign-in experience for users across organizations.
Thank You,
Chetan
1 Reply
Sort By
- Nivedipa-MSFT
Microsoft
@chetanoptimus - Thanks for bringing this issue to our attention. We will check and update you soon.