How to Fix OneDrive Sync Error 2400 for SharePoint
Question details
External users experience Error 2400 when attempting to sync a SharePoint library using a personal Microsoft account.
- Product
- Microsoft OneDrive and SharePoint
- Device & OS
- not provided
- Scenario
- An external user with a personal Microsoft account linked to an email like Gmail tries to sync a SharePoint library via the B2B Sync feature.
- Observed behavior
- The browser allows access and editing of the shared library, but clicking the Sync button triggers the error message 'Something went wrong. [2400].'
Verify whether the Microsoft account you are using is a personal account or a designated work or school account, as this determines your syncing capabilities in SharePoint.
Access and Edit SharePoint Files in Your Web Browser
Since personal accounts cannot sync via the desktop app, using the browser is the most immediate workaround to access your files.
SharePoint B2B Sync currently does not support syncing libraries to personal Microsoft accounts. However, web browser functionality remains fully supported for these account types.
Launch your preferred web browser and navigate to the shared SharePoint library link provided by the host organization.
Enter your personal Microsoft account credentials (e.g., your linked Gmail address) to securely access the library.
Click on the documents to view or edit them directly within the Office Online web interface without clicking the desktop Sync button.
Request a Work or School Guest Account
Ask the host organization to provision a compatible account to enable full desktop synchronization.
Discover WPS Office for Seamless Document Management
If you are frustrated by complex sync restrictions and licensing errors in SharePoint or OneDrive, consider using WPS Office. It provides a lightweight, entirely free alternative to Microsoft Office that is perfect for editing your downloaded documents with high compatibility and zero synchronization barriers.
- 1. Download the software: Visit the official WPS website to download and install WPS Office for free.
- 2. Open your files: Download your files from the SharePoint browser interface and open them directly in WPS Office.
- 3. Edit and save seamlessly: Make your changes using the fully-featured editing tools and save them locally or to your preferred cloud storage.
Frequently Asked Questions
Why does SharePoint B2B sync not work with my Gmail-linked Microsoft account?
SharePoint B2B Sync is designed specifically for enterprise environments. It currently only supports syncing libraries to official work or school accounts, not personal Microsoft accounts.
Can I still edit files in SharePoint if I get Error 2400?
Yes, Error 2400 only affects the desktop synchronization feature. You can still access and fully edit the shared files by logging into the SharePoint library directly through your web browser.
Will Microsoft update B2B Sync to support personal accounts in the future?
Microsoft continually investigates effective solutions and feature requests, but currently, there is no official timeline or support for syncing SharePoint libraries directly to personal Microsoft accounts.
How do I stop the Error 2400 message from appearing?
Avoid clicking the 'Sync' button in the SharePoint library ribbon when logged in with a personal account. Rely on the web interface for editing or use an enterprise-level work/school account if provided.
