How to Uninstall Steam Demos & Recover Storage Space

Steam demos can quietly eat up tens of gigabytes across your drives, especially after big sales events or Next Fest weeks. This guide walks you through removing demo entries from your Steam library, deleting leftover files, and reclaiming that space—without touching your full games or save data. You only need the Steam client and a few minutes; no third-party tools required.

What You’ll Need

• The Steam desktop client (Windows, macOS, or Linux) logged into your account.
• Administrator or owner permissions on the PC (to delete files outside the Steam folder if needed).
• About 5–10 minutes, depending on how many demos you have.

Step-by-Step

1. Open Steam and go to your Library. Click the “Library� tab at the top of the Steam window.
2. Switch to “Installed� view. At the top of the game list, click the dropdown that says “All Games� and select “Installed.� This shows only titles currently taking up space on your drives.
3. Identify demos. Demos usually have “Demoâ€� in the title (e.g., “Ghostrunner Demoâ€�). If you’re unsure, right-click a game and select “Propertiesâ€� – the “Installed Filesâ€� tab will show its install folder; demos often sit in a folder like steamapps\common\[Game Name] Demo.
4. Uninstall via Steam (the proper way). Right-click the demo in your Library and choose Manage → Uninstall. Confirm the pop-up. Steam will remove the files and the entry from your Library. Repeat for each demo.
5. Check for leftover folders. After uninstalling, open your Steam installation folder (default: C:\Program Files (x86)\Steam on Windows, or ~/Library/Application Support/Steam on macOS). Go to steamapps\common and look for any folder that still has the demo’s name. If you see one, delete it manually (right-click → Delete). These leftovers can happen if the uninstaller fails or if the demo was installed outside the standard folder.
6. Clear the download cache (optional but helpful). If you’ve installed and uninstalled many demos, Steam may hold old manifest files. Go to Settings (or Preferences on macOS) → Downloads → Clear Download Cache. This forces Steam to re-scan your library and can free a little extra space. You’ll need to log in again after doing this.
7. Verify space reclaimed. Right-click any game in your Library → Properties → Installed Files → Browse to see the drive. Or simply check your drive’s free space in File Explorer / Finder. You should see the difference.
8. Uninstall demos from other drives. If you have multiple Steam library folders (e.g., D:\SteamLibrary), repeat step 4 for demos installed there. Steam handles this automatically when you uninstall, but leftover folders may exist in each library’s common folder.

Common Mistakes

• Deleting the folder before uninstalling via Steam. If you manually delete a demo’s folder while Steam still thinks it’s installed, Steam will show an error and may try to re-download it. Always uninstall through Steam first.
• Confusing demos with full games. Some demos have names that don’t include “Demoâ€� (e.g., “Proton Demoâ€� or a beta branch). Check the game’s store page or its install size—demos are usually much smaller.
• Ignoring the “Installedâ€� filter. If you uninstall from the “All Gamesâ€� view, you might accidentally uninstall a full game that has a similar name. Use the filter to avoid mistakes.
• Forgetting about shader caches. Steam may keep shader pre-cache files for demos you’ve uninstalled. These are usually small, but you can clear them by going to Settings → Downloads → Shader Pre-Caching and clicking “Clear Shader Cache.â€� This is safe and doesn’t affect your other games.

Tips

• Use Steam’s “Manageâ€� menu for bulk operations. While you can’t select multiple demos at once, you can right-click each and uninstall quickly. Alternatively, use the steam://uninstall/<appid> command in your browser, but you need the app ID for each demo.
• Check your Steam library folders for orphaned folders. Use a disk space analyzer (like WinDirStat or TreeSize) to find large folders under steamapps\common that don’t correspond to any installed game. That’s a sign of a leftover demo.
• Set a default install location. In Steam Settings → Downloads → Steam Library Folders, you can set a primary drive. Demos you install later will go there, making them easier to track.
• Disable auto-download of demos. If you often click “Play Demoâ€� on store pages, Steam may automatically install them. You can’t disable that entirely, but you can uninstall immediately after trying the demo.

Troubleshooting

• Steam says “Files missingâ€� or “Update requiredâ€� after you delete a folder. This happens when you manually delete a demo folder without uninstalling. Fix: Restart Steam. If it still shows as installed, right-click → Properties → Installed Files → Verify Integrity of Game Files. Steam will re-download the missing files, then you can uninstall properly.
• Demo doesn’t appear in your Library after uninstalling. It might still be in your “All Gamesâ€� list but grayed out. Right-click and select “Manageâ€� → “Remove from Accountâ€� (or “Hideâ€�) to clean up the entry. This doesn’t delete files, but it hides the entry.
• Storage space not freed after uninstall. Check if the demo was installed on a different drive. Go to Settings → Downloads → Steam Library Folders and see which drives have content. Also, check your Recycle Bin—Steam doesn’t use it, but if you manually deleted a folder, it might be there.
• Steam won’t let you uninstall because the demo is “currently running.â€� Close the demo completely (check the system tray) and try again. If it’s stuck, restart Steam.
• Leftover registry entries (Windows). Steam sometimes leaves registry keys for uninstalled demos. This is harmless and doesn’t take up significant space, but if you’re a power user, you can search for the demo’s name in regedit under HKEY_CURRENT_USER\Software\Valve\Steam\Apps and delete the corresponding key. Be careful—only delete keys for demos you’ve uninstalled.

Frequently Asked Questions

Q: Do I lose my save data when I uninstall a demo?
A: Usually not. Most demos save to your user data folder (steamapps\userdata) or the cloud, so your progress is preserved if you reinstall the demo later. However, some demos don’t support cloud saves, so check the store page.

Q: Can I uninstall a demo without using Steam?
A: You can delete the folder manually, but Steam will still think it’s installed. It’s better to use the uninstall option in Steam to avoid errors.

Q: How do I find all demos I’ve ever installed?
A: In your Library, click the “All Games� dropdown and select “Demos� (if available). Alternatively, go to your Steam profile → “Games� → “Demos� to see a list of demos you’ve played.

Q: Will uninstalling a demo affect the full game if I own it?
A: No. Demos and full games are separate products. Uninstalling a demo won’t touch your full game’s files or saves.

Q: Can I stop Steam from automatically installing demos?
A: Not directly. But you can avoid clicking “Play Demo� on store pages. If you do, you can uninstall immediately after trying it.

Q: Is there a way to uninstall multiple demos at once?
A: Not in the standard Steam client. You’ll need to uninstall them one by one. Some third-party tools can batch uninstall, but they’re not officially supported.

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