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How to Uninstall Chromium and Remove Its Leftover Files
To uninstall Chromium on Windows, close its processes, remove it in Settings, and delete its profile only if you no longer need that data. If it arrived unexpectedly or returns after removal, scan for unwanted software and review changed browser settings. Chromium is a legitimate open-source project; a third-party copy can still be unwanted. Chrome and Edge are separate browsers built using Chromium code, so removing Chromium does not uninstall them.
The interface illustrations show representative Windows 11 controls; Windows 10 labels and layouts differ slightly.
How to uninstall Chromium on Windows
1. Confirm that the app is Chromium
Open Settings > Apps > Installed apps and search for Chromium. On Windows 10, look under Settings > Apps > Apps & features. Remove only the entry that is actually named Chromium. Do not uninstall Chrome, Edge, Brave, or another browser just because it uses Chromium code. Read the Chromium Project overview.
2. Close Chromium before uninstalling it
Press Ctrl+Shift+Esc to open Task Manager, select Chromium under Processes, and choose End task. If entries are grouped, close the Chromium group only. Skip this step if it is not running, and do not end unfamiliar Windows processes.
3. Run the Windows uninstaller
On Windows 11, open Settings > Apps > Installed apps, choose the three-dot menu beside Chromium, then Uninstall. On Windows 10, use Settings > Apps > Apps & features. If Chromium is not listed, try Control Panel > Programs > Programs and Features. For an uninstall error, use Microsoft’s troubleshooting guidance; do not delete registry entries by hand.
4. Scan the computer if Chromium was unexpected
If Chromium was installed without your knowledge or changed another browser, run a full scan from Windows Security > Virus & threat protection. Update security intelligence first. For threats that persist while Windows runs, use Microsoft Defender Offline, which restarts the PC and scans outside the normal Windows session. Chromium itself is not automatically malware.
5. Remove Chromium’s leftover profile only if you want to erase it
The app and its profile are separate. Chromium profile data can include bookmarks, history, and cookies, so back up anything you need first. For the default Windows build, enter %LOCALAPPDATA%\Chromium in File Explorer; its profile is usually in User Data. Delete only the folder you have confirmed belongs to the removed Chromium app, never a Chrome or other browser folder. The Chromium documentation notes that profile locations can vary or be customized.
6. Review extensions in browsers you still use
In any browser showing redirects or pop-ups, review its extensions, startup page, and search engine. Remove only add-ons you do not recognize or trust; uninstalling Chromium does not remove extensions from Chrome, Edge, or Firefox. See Google’s instructions to manage Chrome extensions.
7. Reset only the browser whose settings changed
Reset only the browser whose settings changed. In Chrome, go to Settings > Reset settings > Restore settings to their original defaults. Google says this resets items such as search and startup pages but keeps bookmarks and passwords; see its reset guide. In Edge, open edge://settings/reset and choose the restore-defaults option. In Firefox, select Help > More troubleshooting information > Refresh Firefox; Mozilla lists what a refresh removes in its Firefox guide. A reset can remove extensions and custom settings.
8. Restore your preferred default browser
If Windows’ default changed, open Settings > Apps > Default apps and choose your browser. Windows 10 lists it under Web browser; Windows 11 may show Set default. See Microsoft’s default-browser instructions for Edge as an example.
If Chromium keeps coming back
After restarting, check Installed apps again. If Chromium returns, run a full or Offline scan and review startup entries that clearly belong to it. Do not disable system services or edit the Registry based on a guess. On a work- or school-managed PC, ask IT whether a policy is reinstalling it.
What to do on macOS or Linux
On macOS, quit Chromium and use its uninstaller if included; otherwise move it from Applications to Trash. Follow Apple’s uninstall steps. Its usual profile is ~/Library/Application Support/Chromium. On Linux, use the package manager or app store that installed Chromium; its usual profile is ~/.config/chromium. Back up needed data before deleting either profile.
Common questions
Is Chromium a virus?
No. Chromium is an open-source browser project. A third-party installer can bundle unwanted software or imitate Chromium, so investigate an unexpected installation and scan the device.
Will uninstalling Chromium remove Chrome or Edge?
No. They are separate installed browsers. Removing Chromium does not remove them, their profiles, or their bookmarks.
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