OneDrive File Issues

Fix OneDrive Sync Errors for an External SharePoint Site

Anum MushtaqAnum Mushtaq Oct 28, 2026 868 views

Question details

A single user is unable to sync an external SharePoint site using OneDrive, while other users can sync without issues.

Fix OneDrive Sync Errors for an External SharePoint Site
Product
Microsoft OneDrive and SharePoint
Device & OS
not provided
Scenario
Attempting to sync a folder from an external SharePoint site to a local machine.
Observed behavior
The user encounters a persistent sync error across multiple computers and browsers, which is not resolved by reinstalling or resetting the OneDrive application.
Before you start

Verify that you have Microsoft 365 administrator privileges, as resolving account-specific synchronization issues often requires backend diagnostic access and support tickets.

Solution 1Recommended

Contact Microsoft 365 Support for Account-Level Diagnostics

Since standard troubleshooting fails and the issue follows the user across devices, the problem lies within the account's backend configuration and requires Microsoft support.

When an issue is isolated to a single user and persists across different computers, local app troubleshooting will not be effective. The Microsoft support team has the necessary backend permissions to inspect the account's token and permission mapping.

1
Access the Admin Center

Sign in to the Microsoft 365 admin center using your administrator credentials.

2
Open Support Options

Navigate to the 'Support' section in the left-hand menu pane and select 'New service request'.

3
Detail the Issue

Briefly describe the external SharePoint sync error, making sure to note that device-level troubleshooting (like resetting OneDrive) has already been performed and that other users are unaffected.

4
Submit for Diagnostics

Submit the ticket so Microsoft's support team can remotely collect logs and run diagnostic tools on the specific user account.

Contact Microsoft 365 Support for Account-Level Diagnostics
Admin Requirement: Only a Microsoft 365 admin can create a support ticket. If you are an end-user, please contact your organization's IT department.
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Frequently Asked Questions

Why does the OneDrive sync error happen to only one user?

This typically indicates an account-level glitch, a corrupted backend permission token, or an expired guest access right, rather than a local app issue. This is why reinstalling or resetting OneDrive doesn't resolve it.

Can I fix an account-specific SharePoint sync error without an admin?

Usually, no. If standard local fixes fail and the issue is isolated to your account across multiple devices, a Microsoft 365 administrator must engage Microsoft support to run backend diagnostic tools.

How do I collect OneDrive sync logs for support?

Microsoft support will typically provide a specialized diagnostic tool, such as the Microsoft Support and Recovery Assistant (SaRA), which you can run on the affected machine to automatically gather the necessary logs.