The fastest way depends on your operating system

On Windows, use Settings > Apps > Apps & features, find the program you want to remove, click it, then click Uninstall. On Mac, open Applications in Finder, right-click the program, and select Move to Trash, then empty the Trash. Both methods remove the program files and its shortcuts from your computer. Some programs add extra files to your system that this basic removal leaves behind — those are usually harmless, but we'll cover how to find and remove them if you want a complete clean.

The reason to remove a program is usually one of three: you don't use it, it's taking up disk space, or it's causing problems. Uninstalling is safe — you can always reinstall later if you change your mind. The program won't come back on its own, and removing it won't affect other programs unless they depend on shared files, which is rare on modern computers.

Key Takeaways

  • Windows users should go to Settings > Apps > Apps & features, select the program, and click Uninstall; Mac users should drag the program from Applications to Trash.
  • Built-in uninstallers remove most program files, but some programs leave behind settings folders and cache files that take up minimal space.
  • If a program won't uninstall or keeps reappearing, restart your computer first, then try uninstalling again or use a third-party removal tool.
  • Removing a program does not affect your files, documents, or other software unless another program specifically depends on it.

Windows: Using Settings to uninstall

Open Settings by pressing Windows key + I, or click the Start menu and type "Settings". Go to Apps in the left sidebar, then click Apps & features. Scroll through the list to find the program you want to remove. Click it once to select it, and an Uninstall button will appear. Click Uninstall, and Windows will walk you through the removal process — usually just one or two confirmation clicks.

Some programs have their own uninstaller that pops up when you click Uninstall. Follow the prompts, which typically ask whether you want to keep settings or remove everything. Choose "Remove all" or "Complete uninstall" if you want the program completely gone. If the uninstaller asks about shared files used by other programs, click "No" or "Don't remove" — removing shared files can break other software.

After uninstalling, Windows may ask you to restart. Do it — restarting clears out temporary files and ensures the program is fully removed from memory. If you don't restart and try to reinstall the same program right away, you may run into conflicts.

Mac: Removing programs from Applications

Open Finder and click Applications in the sidebar. Scroll to find the program you want to remove. Right-click it and select Move to Trash. The program is now in your Trash folder but not yet deleted. To finish, click the Trash icon in your Dock, then click Empty to permanently remove it.

Some Mac programs come with their own uninstaller — a separate application file called "Uninstall [Program Name]". If you see one in the Applications folder, double-click it and follow the prompts. This method is more thorough than dragging to Trash because the uninstaller can remove settings files that dragging leaves behind.

Mac programs are generally cleaner than Windows programs — they store most of their files in one folder, so dragging to Trash removes almost everything. If you want to be thorough and remove leftover settings, see the section on finding hidden files below.

What happens to your files and settings

Uninstalling a program does not delete your documents, photos, or any files you created with that program. Those files stay on your computer in whatever folder you saved them to. If you want to keep documents you made in that program, make sure they're saved somewhere safe before you uninstall.

Settings and preferences the program stored — like your login information, window size, or custom options — are usually deleted when you uninstall. Some programs ask during uninstall whether you want to keep these settings in case you reinstall later. If you think you might use the program again, click "Keep settings" or "Save preferences". If you're sure you won't use it again, choose "Remove all".

Programs that won't uninstall or keep reappearing

If you click Uninstall and nothing happens, or the program reappears after you remove it, restart your computer first. Sometimes a program is still running in the background and won't let Windows or Mac remove it. After restarting, try uninstalling again.

If it still won't uninstall, the program may be protected by administrator settings. On Windows, right-click Settings and select "Run as administrator", then try the uninstall again. On Mac, you may need to enter your password when prompted.

For stubborn programs, third-party removal tools like Revo Uninstaller (Windows) or AppCleaner (Mac) can force removal. These tools are free and work by finding all the program's files and settings across your computer and deleting them together. Download from the official website, run the tool, select the program you want to remove, and let it scan and delete. This is safe — you're just being more thorough than the built-in uninstaller.

Finding and removing leftover files

After uninstalling, some programs leave behind settings folders and cache files. These take up minimal space — usually less than 100 MB — and don't affect your computer's performance. You only need to remove them if you want a completely clean slate or if you're trying to free up disk space on a very full drive.

On Windows, open File Explorer and go to C:\Users\[Your Username]\AppData. You'll see three folders: Roaming, Local, and LocalLow. Programs store settings in these folders. Look for a folder with the program's name, right-click it, and delete it. If you're not sure which folder belongs to which program, you can search for the program name in the AppData folder.

On Mac, open Finder, press Command + Shift + Period to show hidden files, then navigate to Users > [Your Username] > Library. Look for a folder with the program's name — it might be under Preferences, Application Support, or Caches. Drag it to Trash and empty the Trash. Showing hidden files makes your Finder look cluttered, so press Command + Shift + Period again to hide them when you're done.

Freeing up disk space after uninstalling

Uninstalling removes the program files, but your computer's storage may not show the freed space right away. On Windows, run Disk Cleanup: press Windows key + R, type "cleanmgr", and click OK. Select the types of files you want to remove — Temporary files, Recycle Bin, and Old Windows installations are safe choices. Click OK and let it run.

On Mac, the Trash folder holds deleted files until you empty it. Click the Trash icon in your Dock and click Empty Trash. If you want to see how much space a program was using before you delete it, right-click the program in Applications, select "Get Info", and look at the size listed at the top.

Frequently Asked Questions

Can I uninstall Windows or Mac built-in programs?

Most built-in programs like Notepad, Calculator, or Mail can be uninstalled on newer versions of Windows and Mac. However, some core programs like File Explorer or Finder cannot be removed because the operating system depends on them. If you try to uninstall a program and no Uninstall button appears, it's protected and can't be removed.

What if I uninstall a program by mistake?

You can reinstall it anytime by downloading it again from the publisher's website or from the Microsoft Store (Windows) or App Store (Mac). Your files won't be affected. If the program had settings you want to keep, and you chose "Keep settings" during uninstall, those will still be there when you reinstall.

Will uninstalling a program speed up my computer?

Only if the program was running in the background or set to start automatically. Removing a program you never use frees up disk space but won't noticeably improve speed unless your drive is nearly full. If your computer is slow, the problem is usually too many programs starting at boot, not the total number installed.

Is it safe to use third-party uninstaller tools?

Yes, tools like Revo Uninstaller and AppCleaner are safe and widely used. Download only from their official websites, not from random download sites. These tools are useful when a program won't uninstall normally, but for most programs, the built-in uninstaller works fine.

Do I need to restart my computer after uninstalling?

Windows often asks you to restart, and you should do it — restarting ensures the program is fully removed from memory. Mac rarely requires a restart after uninstalling. If you don't restart on Windows and try to reinstall the same program right away, you may see error messages.