Unable to Access Shared Files Across Tenants in Microsoft Teams

Dineshkumar T 5 Reputation points

I am facing an issue with cross-tenant file sharing in Microsoft Teams. I have two tenants, tenant1 and tenant2. A member of tenant1 has been added as a guest in tenant2. Despite having the necessary permissions verified in OneDrive, when a user from tenant1 attempts to open a file shared in Teams by a user from tenant2, they encounter an "Unauthorized" error.

I have attached screenshots for reference, confirming that the member from tenant1 has the appropriate permissions through the sharing link in OneDrive.

This issue is hindering collaboration and file access between the two tenants.


  • [Screenshot 1: Permissions in OneDrive for the shared file] User's image
  • [Screenshot 2: Error message encountered in Microsoft Teams]
  • User's image

User's image

Microsoft Teams
Microsoft Teams
A Microsoft customizable chat-based workspace.
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A Microsoft file hosting and synchronization service.
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A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
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  1. Konstantinos Passadis 17,456 Reputation points MVP
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