How to Remove Stale SharePoint Library Entries from OneDrive

Click the OneDrive cloud icon located in the Windows taskbar system tray, click the gear icon, and select Settings.

Navigate to the Account tab within the settings menu to view a list of all currently synchronized OneDrive and SharePoint locations.

Find the obsolete SharePoint library in the list and click 'Stop sync' next to it.

Open File Explorer, navigate to the location of the obsolete SharePoint library, and delete the folder to remove it completely from your computer.

Press Windows Key + R, type 'regedit' into the Run dialog box, and press Enter to open the Registry Editor.

Go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace in the left pane.

Review the subkeys (folders with alphanumeric strings). Click on each one to check the 'Data' value on the right pane to identify which one corresponds to the stale OneDrive location. Right-click and delete only the keys clearly associated with the obsolete libraries.

Restart your computer or open Task Manager to restart the Windows Explorer process and apply the registry changes.

Check if your computer is a company-issued device or connected to a corporate network that uses Microsoft Endpoint Manager (Intune) or Group Policy.

Reach out to your organization's Microsoft 365 or SharePoint IT administrator.

Ask the administrator to review and update any automated policies that are forcing the specific SharePoint libraries to synchronize to your OneDrive account.