OneDrive File Issues

How to Sync External SharePoint Files with OneDrive in Windows 11

Bushra Parveen Sep 28, 2026 869 views

Question details

The user needs to synchronize shared files from an external SharePoint organization using their local OneDrive desktop client.

How to Sync External SharePoint Files with OneDrive in Windows 11

Product: OneDrive and SharePoint
Device & OS: Windows 11
Scenario: Setting up local file synchronization for collaborative folders hosted by an external organization.
Observed behavior: Configuring SharePoint B2B synchronization so external shared files are accessible locally in Windows File Explorer.

Before you start

Verify that both your organization and the external partner use SharePoint Online and that their administrator has enabled external synchronization policies.

Solution 1Recommended

Clear Cached Credentials and Re-Sync via Private Browsing

Clearing old Windows credentials prevents login conflicts when authenticating as a guest user in another organization's SharePoint environment.

When dealing with external organizations, Windows often attempts to use your primary account credentials, leading to sign-in errors. Using an InPrivate or Incognito window forces the system to ask for the correct guest account credentials.

Unlink OneDrive

Click the OneDrive cloud icon in your system tray, click the gear icon to open Settings, navigate to the Account tab, and click 'Unlink this PC'.

Clear Windows Credentials

Open the Windows 11 Control Panel, search for and open 'Credential Manager', then select 'Windows Credentials'. Locate and remove any cached credentials related to OneDrive or Microsoft Office.

Open Shared Link in Private Mode

Open your web browser in InPrivate (Edge) or Incognito (Chrome) mode, and navigate to the external SharePoint folder link provided by the host organization.

Initiate Synchronization

Click the 'Sync' button located in the SharePoint toolbar and sign in using your designated external guest account credentials.

Clear Cached Credentials and Re-Sync via Private Browsing

B2B Sync Requirements: If you receive an error, ensure both directories meet Microsoft's B2B Sync requirements. Check with the host IT admin if their external sharing policies might be blocking synchronization.

Free Microsoft Office alternative

Seamlessly Edit Your Synced SharePoint Documents with WPS Office

Having trouble with Microsoft Office installations or need a more agile editing tool? WPS Office is a highly compatible, free alternative. Once your SharePoint files are synced to your local Windows 11 folder, you can open and edit them instantly using WPS Office's lightweight and intuitive interface.

1. Download and Install: Get WPS Office for free from the official website and install it on your Windows 11 PC.
2. Open Synced Files: Navigate to your synced OneDrive SharePoint folder in File Explorer and double-click any document to open it in WPS Office.
3. Edit and Save: Make your changes and save the file. The edits will automatically sync back to the external SharePoint environment via OneDrive.

Fully compatible with Microsoft Word, Excel, and PowerPoint formats (.docx, .xlsx, .pptx)Lightweight installation that runs flawlessly on Windows 11 without consuming heavy system resourcesFamiliar user interface requiring zero learning curve for seamless migrationFree to use, significantly reducing your software overhead costs

microsoft office alternative - wps office

Frequently Asked Questions

Why am I getting a sign-in error when trying to sync external SharePoint files?

This usually happens due to conflicting cached credentials on your PC. Clearing your Windows Credentials in the Control Panel and signing in through an InPrivate or Incognito browser window ensures you are using the correct guest account credentials.

Can I sync external SharePoint files if my organization uses SharePoint Server (on-premises)?

No, SharePoint B2B sync requires both the host organization and your organization to be using cloud-based SharePoint Online.

Why is the 'Sync' button missing from the shared SharePoint folder?

The host organization's administrator may have restricted local syncing for guest users, or you may only have 'View' permissions, which often disables the synchronization feature for external accounts.

Document & File Issues