Uninstall OneNote for Windows 10: Clean Removal Without Lingering Files

Uninstalling OneNote from Windows 10 feels like finally cleaning out that junk drawer you’ve ignored for years—except this time, the clutter is digital. ✨ I’ve helped dozens of users remove it completely, and the key is knowing whether you’re dealing with the built-in version or the standalone app.

The wrong approach leaves behind leftover files that can slow down your system or even break other Office apps.

The first step is always the same: back up your notes. OneNote doesn’t always export cleanly, so I recommend saving critical content to a folder or another service like Dropbox. Then, check if OneNote came bundled with Office—this changes how you uninstall it.

Built-in versions hide in Settings, while standalone apps show up in Control Panel’s Programs list. I’ve seen users skip this check and end up with half-removed installations that cause more headaches than they solve.

Once you’ve identified the right method, the actual uninstall takes under five minutes if you follow the steps carefully. For stubborn leftover files, I use a simple PowerShell command that clears out the remnants—something I learned from debugging installations in my early days at Microsoft.

The difference between a clean removal and a messy one comes down to these final verification steps, which I’ll walk you through to make sure nothing’s left behind.

We’ll also cover what to do if other Office apps start acting up after removal—a common issue when dependencies aren’t handled right. Trust me, I’ve seen this happen more times than I can count, and the fix is usually simpler than it seems.

Let’s get started and make sure your system runs smoother without OneNote weighing it down.

What you need

Step-by-Step instructions for removing OneNote from Windows 10 completely

Here's the foolproof method I use to fully remove OneNote and its leftover traces.

Open the Start menu and click the gear icon to launch Settings. Navigate to Apps > Apps & features. In the list, find Microsoft OneNote and click it.

Select Uninstall from the options that appear. Windows will prompt you to confirm the removal—click Uninstall again. The process takes about 1-2 minutes, and you'll see a confirmation when it completes.

Here's the thing—this only removes the main program. OneNote leaves behind critical files in hidden locations, so we need to clean those up next.

Open File Explorer and navigate to C:\Users\[YourUsername]\AppData\Local\Microsoft\OneNote. Delete everything in this folder—this removes your notes and cache, but we're cleaning up the entire installation.

Next, go to C:\Program Files\Microsoft Office\root\Office16 (or Office15 for older versions) and delete the ONENOTE.EXE file if it still exists. This ensures no traces remain in the Office installation directory.

I always check C:\ProgramData\Microsoft\Windows\Start Menu\Programs for any leftover OneNote shortcuts and delete them too. This prevents accidental reinstalls later.

Press Ctrl+Shift+Esc to open Task Manager. Go to the Startup tab and look for any OneNote entries. Right-click each and select Disable to prevent it from launching automatically.

In the same Task Manager window, check the Processes tab for any lingering ONENOTE.EXE processes. End them if they're still running—this ensures a completely clean removal.

Real talk: Some users report OneNote reappears after updates. If that happens, we'll address it in the next step.

Open Registry Editor by pressing Win+R, typing regedit, and hitting Enter. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and delete any OneNote entries.

Next, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall and look for any OneNote-related keys. Right-click and Delete them—this removes Windows' record of the program.

Don't skip this (I learned the hard way). Some Windows updates silently reinstall OneNote. To prevent this, disable automatic app updates by going to Settings > Update & Security > Windows Update > Advanced options > Choose how updates are delivered and turning off updates for Microsoft Store apps.

Reboot your PC to ensure all changes take effect. After logging back in, open File Explorer and search for ONENOTE.EXE. If nothing appears, the uninstall was successful.

Run a final check in Task Manager > Startup to confirm no OneNote processes remain. You can also use System File Checker by opening Command Prompt as Administrator and typing sfc /scannow to repair any lingering system file issues.

You've got this. With these steps, OneNote will be completely gone from your system, and no unwanted files or processes will linger.

Tips & tricks for completely removing OneNote from Windows 10

Let me save you the frustration I went through after realizing OneNote kept popping back up like a stubborn app. These are the exact tricks I use to make sure it stays gone for good.

Backup First: Before deleting anything in Step 2, I recommend backing up your OneNote notebooks. Open OneNote, go to File > Export > Create PDF/XPS, and save your notes to a cloud drive or external storage. This ensures you don't lose important information if something goes wrong during the cleanup.

Hidden File Visibility: In Step 2, you'll need to see hidden files to access the OneNote folders. Before navigating to AppData\Local\Microsoft\OneNote, enable hidden files in File Explorer: Go to View > Show > Hidden items. This is crucial because those folders are hidden by default, and you won't find them otherwise. Trust me on this - I spent 20 minutes searching for them before realizing they were hidden!

Registry Editor Caution: When working with the Registry Editor in Step 4, be extremely careful. Before deleting any OneNote-related keys, make a backup of your registry by right-clicking the Computer folder in the left pane and selecting Export. Save it to your desktop with a name like "RegistryBackup.bak". This way, if something goes wrong, you can restore it easily. I've seen users accidentally delete critical system keys, so don't skip this step.

Update Check Strategy: After completing Step 4, I recommend setting a calendar reminder for 30 days later. Some Windows updates can silently reinstall OneNote, and this gives you time to catch it early. If you notice OneNote reappearing, repeat Steps 1-4 immediately. I've had to do this twice after major Windows updates, so it's better to be prepared.

Frequently asked questions

Got questions about removing OneNote from Windows 10? Here are some common concerns—and their answers—to help you uninstall smoothly.

Wrapping up and next steps

Uninstalling OneNote from Windows 10 doesn’t have to be a hassle—whether you’re freeing up space or switching tools, you now know how to do it cleanly and efficiently. By following the steps above, you’ve ensured no lingering files or registry entries slow down your system. 🎉

Ready to breathe new life into your device? Now that OneNote is gone, explore other note-taking apps or dive into optimizing your Windows 10 setup for even better performance. Your digital workspace awaits! 🚀