File Sharing Problems

Fix OneDrive Cross-Organization File Sharing and Co-Authoring Issues

Partner Editor Oct 1, 2026 868 views

Question details

A guest user from another organization can edit a shared file in Word Online but encounters a tenant directory error when attempting to open it in the desktop app or synchronize it via OneDrive.

How to Fix OneDrive File Sharing and Co-Authoring Across Organizations

Product: Microsoft OneDrive and Word
Device & OS: not provided
Scenario: Co-authoring and synchronizing shared documents across different university or organizational tenants.
Observed behavior: The external user can successfully edit the document in the web browser, but opening the file in the desktop app or syncing it fails because the account is not found in the host tenant directory.

Before you start

Ensure the external user is signing in with the exact email address that received the sharing invitation, and verify with your IT administrator that cross-tenant collaboration is permitted.

Solution 1Recommended

Verify Microsoft Entra Cross-Tenant Settings

Use this solution to ensure that both the hosting and the guest organizations have properly configured their external sharing policies to allow desktop access.

Desktop Office applications and OneDrive synchronization require stricter authentication than web access. If the external account is not properly authenticated in the host's directory, desktop access will be blocked.

Check the signed-in account

Open your Microsoft Word desktop application, click on your profile picture in the top right corner, and ensure you are signed in with the exact account that was invited.

Contact the host IT administrator

Reach out to the IT department of the university hosting the file. Request them to verify that your account has been added as a Guest User in their Microsoft Entra (formerly Azure AD) directory.

Review cross-tenant access policies

Both organizations' administrators must review their B2B collaboration settings in the Microsoft Entra admin center to ensure inbound and outbound cross-tenant sync and desktop app access are allowed.

Verify Microsoft Entra Cross-Tenant Settings

Licensing Requirements: Opening shared files in the desktop app requires the guest user to have an active Microsoft 365 license that includes desktop applications.

Solution 2

Use the Web Version for Co-Authoring

If organizational policies strictly prohibit desktop synchronization for guest users, use the web-based Office apps as a seamless workaround.

Free Microsoft Office alternative

Try WPS Office for Hassle-Free Document Collaboration

If strict tenant directory restrictions in Microsoft Office are hindering your ability to collaborate with external organizations, WPS Office provides a lightweight, highly compatible alternative for seamless file sharing and co-authoring.

1. Download and install WPS Office: Get the free WPS Office suite from the official website and install it on your device.
2. Create or open a document: Open the file you wish to collaborate on within the WPS Office application.
3. Share via a simple link: Click the 'Share' button in the top right corner, set your preferred editing permissions, and send the link to external collaborators without worrying about tenant directories.

Completely free and lightweight Office suiteHighly compatible with Microsoft Word (.docx), Excel (.xlsx), and PowerPoint (.pptx) formatsEasily share documents via links without complex cross-tenant directory setupsFamiliar user interface ensuring a smooth migration and zero learning curve

microsoft office alternative - wps office

Frequently Asked Questions

Why can I edit the shared Word file online but not in the desktop app?

The desktop application requires your account to be fully authenticated as a guest user within the host organization's Microsoft Entra directory. Web access is often permitted via simple link-sharing, whereas desktop access enforces stricter B2B cross-tenant policies.

How do administrators fix the 'account not found in the tenant directory' error?

Administrators need to configure B2B collaboration settings in the Microsoft Entra admin center, send a proper guest invitation, and ensure the external user has completed the guest redemption process before attempting to sync via OneDrive.

Can I synchronize shared folders from another organization without guest access?

No, synchronizing files or folders from another organization's OneDrive or SharePoint using the desktop sync client strictly requires B2B guest access and proper cross-tenant permissions configured by the IT administrators.

Document & File Issues