OneDrive File Issues

Fix Windows 11 File Explorer Slow in OneDrive and SharePoint Folders

Algirdas Jasaitis Oct 22, 2026 868 views

Question details

Users experience significant delays and sluggish performance when navigating synchronized folders in File Explorer after upgrading to Windows 11.

How to Fix Slow File Explorer in Windows 11 OneDrive and SharePoint Folders

Product: OneDrive and SharePoint
Device & OS: Windows 11
Scenario: Browsing local synchronized directories containing a large volume of files (typically over 100,000 items) after updating from Windows 10.
Observed behavior: File Explorer becomes increasingly slow to open folders and display file contents, even though the OneDrive background synchronization process itself functions normally.

Before you start

Ensure your Windows 11 system has the latest updates installed and verify that your OneDrive client is up to date before making changes to your synchronization scope.

Solution 1Recommended

Use OneDrive Selective Sync to Reduce Local Files

Decrease the number of locally synchronized folders to improve File Explorer responsiveness, which is highly effective if your library contains over 100,000 files.

Windows 11 File Explorer performance can degrade heavily when managing massive amounts of indexed items in synchronized locations. Limiting local synchronization to only the folders you frequently use significantly speeds up local folder navigation.

Open OneDrive Settings

Click the OneDrive cloud icon in your Windows taskbar notification area, click the gear icon (Help & Settings), and select 'Settings'.

Navigate to Folders

Go to the 'Account' tab in the OneDrive settings menu and click the 'Choose folders' button.

Adjust Sync Scope

Uncheck the large folders or directories you do not need to store locally on your device, then click 'OK' to save your preferences.

Use OneDrive Selective Sync to Reduce Local Files

Accessing Unsynced Files: Folders you uncheck will be removed from your PC's File Explorer to save resources, but they remain safely stored and accessible online via your OneDrive or SharePoint web portal.

Solution 2

Access Massive SharePoint Libraries via Web Browser

Prevent local File Explorer lag by interacting with enormous shared company directories directly through your web browser instead of synchronizing them.

Solution 3

Contact Microsoft Support for Backend Diagnostics

If selective sync does not resolve the issue and the slowdown affects multiple devices within the organization, your IT admin may need to request Microsoft backend diagnostics.

Free Microsoft Office alternative

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1. Download the Installer: Visit the official WPS website and download the free WPS Office installation file.
2. Install the Software: Run the downloaded file and follow the quick setup wizard to install the suite on your Windows 11 computer.
3. Open Your Documents Fast: Launch WPS Office and open your existing Office files for an instantly faster, distraction-free editing experience.

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Frequently Asked Questions

Why is OneDrive so much slower on Windows 11 compared to Windows 10?

Upgrading to Windows 11 introduces new File Explorer integrations and visual interface changes. When synchronizing massive directories (especially those over 100,000 files), these new system processes can struggle to index and render folder contents efficiently, causing noticeable lag that wasn't as prevalent in Windows 10.

How many files can I sync in OneDrive before performance drops?

While Microsoft technically supports syncing up to 300,000 files across all document libraries, many users report noticeable File Explorer slowdowns and instability in Windows 11 once the local file count exceeds 100,000 items.

Does using 'Files On-Demand' fix the slow File Explorer issue?

Not entirely. While 'Files On-Demand' saves hard drive space by keeping files in the cloud until accessed, File Explorer still has to index and display the shortcut icons for all those files. If you have over 100,000 files, just loading the directory structure can be slow, making selective sync a better overall solution.

Will pausing OneDrive sync speed up File Explorer temporarily?

Pausing synchronization temporarily halts network activity and background file processing, which might offer a slight immediate performance boost to File Explorer navigation. However, it does not solve the root issue of heavy folder rendering for massive directories in Windows 11.

Document & File Issues