File Sharing Problems

How to Fix OneDrive Guest Sharing and External Upload Problems

Huda Qurayshi Sep 27, 2026 869 views

Question details

Users need to resolve an issue where external recipients are unable to upload files to shared OneDrive folders or are unexpectedly required to sign in with a Microsoft account to access links.

Product: OneDrive
Device & OS: not provided
Scenario: Sharing OneDrive folders with external guests so they can view documents or upload their own files.
Observed behavior: External recipients are prompted to log in with a Microsoft account and cannot bypass the authentication, or they lack the permissions needed to upload files to the shared directory.

Before you start

Verify whether you are using a personal OneDrive account (like Microsoft 365 Family) or a OneDrive for Business account, as external sharing permissions and guest authentication requirements differ significantly between the two.

Solution 1Recommended

Configure External Sharing Settings and Folder Permissions

Identify your account type and adjust your folder sharing settings to allow external access and file uploads.

Personal OneDrive accounts sometimes require external users to sign in with a Microsoft account due to security updates. For OneDrive for Business, administrators control guest sharing policies at the organization level, which may restrict anonymous access.

Select the correct sharing option

Locate the folder you want to share in OneDrive, right-click it, and select 'Share'. Click the gear icon (Settings) to view your link options.

Choose 'Anyone with the link'

To allow external guests to access the folder without creating or signing into a Microsoft account, select the 'Anyone' option. If this option is grayed out in a business account, your IT admin has disabled anonymous sharing.

Enable editing permissions

In the same settings menu, make sure to check the box for 'Allow editing'. External users cannot upload files to your folder unless they have edit permissions.

Apply and send

Click 'Apply' to save the settings, copy the newly generated link, and send it to your external recipients so they can upload their files.

Configure External Sharing Settings and Folder Permissions

Authentication Policy Changes: Microsoft frequently updates its security policies. If the 'Anyone' link option is unavailable on a personal account, external guests may be forced to use a free Microsoft account or verify their identity via a one-time email passcode.

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Frequently Asked Questions

Why did my OneDrive sharing link suddenly start asking external guests to log in?

If you share a folder using the 'Specific people' option, or if Microsoft/your organization updated security policies to disable anonymous links, guests are required to verify their identity via a Microsoft account or a one-time passcode.

Can people using Apple devices access my shared OneDrive links?

Yes. Apple users do not necessarily need a Microsoft account. If you generate an 'Anyone with the link' sharing link, they can access it directly. If restricted, they can use their Apple email to receive a secure verification code instead of creating a new account.

How do I allow external guests to upload files to my OneDrive?

You must share a folder (not just a single file) and explicitly grant editing permissions. Open the link settings, select 'Anyone' or 'Specific people', check the 'Allow editing' box, and share the new link.

Document & File Issues