OneDrive File Issues

Fix Microsoft.SharePoint.exe High RAM and Disk Usage in OneDrive

Phi Hung Vo Sep 28, 2026 874 views

Question details

Users are experiencing extremely high RAM, disk activity, and CPU consumption by Microsoft.SharePoint.exe or OneDrive-related processes, even when files are not actively syncing.

How to Fix Microsoft.SharePoint.exe High RAM and Disk Usage

Product: Microsoft OneDrive
Device & OS: not provided
Scenario: Running OneDrive in the background for routine file synchronization.
Observed behavior: Microsoft.SharePoint.exe processes consume several gigabytes of RAM and excessive disk resources, continuously writing to cache files without any active sync tasks.

Before you start

Ensure you have your Microsoft 365 account credentials available, as you may need to unlink your computer and sign back into your OneDrive account during the troubleshooting process.

Solution 1Recommended

Reset the OneDrive Client

Resetting OneDrive restores default sync settings and can quickly resolve background memory leaks without losing your data.

This process will restart the synchronization engine and perform a full check of your files. It is the safest first step for resolving resource consumption issues.

Open the Run dialog

Press the Windows key + R on your keyboard to open the Run command window.

Execute the reset command

Type `%localappdata%\Microsoft\OneDrive\onedrive.exe /reset` and press Enter.

Restart OneDrive

Wait a few minutes. If the OneDrive cloud icon does not reappear in the system tray, open the Start menu, search for OneDrive, and launch it manually.

Sync Verification: After a reset, OneDrive will verify all files. This may temporarily cause high CPU usage, which is normal and will subside once the check is complete.

Solution 2

Unlink, Clear Cache, and Reinstall OneDrive

If resetting does not work, clearing the corrupted cache files (like FileSyncFSCache.db) and reinstalling a fresh client is necessary.

Solution 3

Contact Your Microsoft 365 Administrator

For persistent memory leaks that survive a clean reinstallation, diagnostic logs must be collected for Microsoft support.

Free Microsoft Office alternative

Switch to WPS Office for a Lightweight Experience

If Microsoft Office and OneDrive processes are draining your system resources, consider switching to WPS Office. It provides a lightweight, highly compatible productivity suite that seamlessly handles Microsoft Office formats without aggressive background resource consumption.

1. Download the installer: Visit the official WPS Office website and download the free installer.
2. Install and launch: Run the installer to complete the setup, then open WPS Office.
3. Open your files: Directly open your existing Microsoft Office documents without worrying about formatting or compatibility issues.

Lightweight installation with minimal background RAM and CPU usageFully compatible with Microsoft Word, Excel, and PowerPoint formatsBuilt-in, easy-to-use cloud synchronization for secure backupsFamiliar user interface allowing for seamless migration

microsoft office alternative - wps office

Frequently Asked Questions

Why does Microsoft.SharePoint.exe consume so much RAM even when not syncing?

This usually happens due to a corrupted cache file, such as FileSyncFSCache.db, or a software defect in the current OneDrive build causing the application to continuously loop and write data in the background.

Is it possible to downgrade my OneDrive version to stop the memory leak?

Downgrading is generally not practical because OneDrive is designed to install updates automatically. Your downgraded version will quickly overwrite itself. It is better to clear the cache and ensure you are on the latest stable production release.

What should I do if clearing the cache does not reduce disk activity?

If local troubleshooting fails and memory usage continues to increase, you should ask your Microsoft 365 administrator to open a support request with Microsoft to investigate the diagnostic logs and identify potential client defects.

Document & File Issues