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How to Access a Shared OneDrive Folder in iOS App as an External User
Question details
An external user needs to access a folder shared from a different Microsoft 365 tenant directly within the OneDrive iOS application, mirroring the desktop experience.
- Product
- OneDrive for iOS
- Device & OS
- iOS
- Scenario
- Attempting to view and collaborate on cross-tenant shared files using a mobile device.
- Observed behavior
- The shared folder does not automatically populate in the external user's OneDrive iOS app, despite being accessible on a laptop, requiring specific cross-tenant identity configurations to resolve.
Verify that you have accepted the original sharing email invitation and can access the shared folder through a standard mobile web browser before attempting to open it in the app.
Resolve Cross-Tenant Access via Microsoft Entra External ID
Because the folder is shared across different Microsoft 365 tenants, access policies must be managed by the host tenant's IT administrator to allow mobile app integration.
Accessing shared folders across different tenants on the OneDrive mobile app relies heavily on external-user and identity policies configured in Microsoft Entra (formerly Azure AD). If the host organization restricts mobile device access for external B2B guests, the folder will not appear in the app.
Contact the IT administrator of the host tenant to ensure your external account is properly provisioned for B2B collaboration in their Microsoft Entra External ID settings.
Locate the original sharing invitation email on your iOS device and tap the shared link. This will prompt the OneDrive app to authenticate your external session and attempt to map the folder to your 'Shared' tab.
Log into OneDrive on the web, navigate to 'Shared with me', select the folder, and click 'Add shortcut to My files'. This shortcut often forces the folder to sync across all devices, including the iOS app.
If the folder remains hidden, request the host's IT administrator to consult the Microsoft Q&A portal for Microsoft Entra External ID, as specific Conditional Access policies may be blocking external mobile application access.
Try WPS Office for Seamless Document Sharing and Collaboration
If complex cross-tenant permissions in Microsoft 365 disrupt your workflow, consider switching to WPS Office. It provides a lightweight, highly compatible alternative with straightforward built-in cloud sharing that bypasses the need for complicated external identity configurations.
- 1. Upload to WPS Cloud: Open WPS Office on your mobile device and save your document directly to WPS Cloud.
- 2. Generate a Share Link: Tap the 'Share' icon on the file, select 'Create Link', and choose 'Anyone with the link can view/edit'.
- 3. Share with External Users: Send the generated link to your external collaborators. They can open and edit the document seamlessly without tenant login barriers.
Frequently Asked Questions
Why does a shared folder show on my laptop but not my iOS app?
The desktop and web versions of OneDrive handle cross-tenant authentication differently. Mobile apps often face stricter Conditional Access and Mobile Device Management (MDM) policies set by the host organization, which can block external guest access on unmanaged mobile devices.
How do I find folders shared with me in the OneDrive iOS app?
Open the OneDrive iOS app and tap on the 'Shared' tab located on the bottom navigation bar. This section displays files and folders that other users or organizations have successfully shared with your account.
Does the external host need to change their security settings for me to view the folder on iOS?
Yes, in many cases, the host's Microsoft Entra External ID policies must be updated to allow external guests to access shared resources via mobile client applications, rather than just through web browsers.
