Avast how to Uninstall - Avast!

Updated: June 4, 2026 · Full review · Alternatives · Antivirus & Security

To remove Avast from your Windows PC, you'll need to uninstall it through Control Panel or Settings, then use the dedicated removal tool to wipe remnants. Here's exactly how to do it—and why the second step matters.

Understanding Why Full Removal Matters

Avast free antivirus leaves behind registry entries, cache files, and driver components even after standard uninstall. These leftovers can cause conflicts if you're switching to a competing solution like ESET Internet Security or Avira. A clean removal prevents crashes, activation errors, and performance hiccups on your desktop or laptop running Windows 10 or Windows 11.

Method 1: Standard Uninstall Through Settings

Step 1: Press `Win + I` to open Settings.

Step 2: Go to Apps → Installed apps.

Step 3: Search for "Avast" in the list.

Step 4: Click the three dots next to it, then select Uninstall.

Step 5: A window will open. Click Uninstall again to confirm.

The software will remove its main files and shield protection. On most Windows systems, this takes 2–3 minutes. You'll see a progress bar, then a restart prompt. Don't skip the restart—it's necessary for the system to release file locks.

Method 2: Deep Removal with Avast Uninstall Utility

This is where avast how to uninstall gets thorough. The standard removal leaves driver files active, so Avast offers a dedicated removal tool.

Getting the Removal Tool

Step 1: Visit Avast's support page and download the Avast Uninstall Utility (available as a small executable, around 1 MB).

Step 2: Save it to your desktop.

Step 3: Boot your PC into Safe Mode with Networking. (Restart, hold Shift during shutdown, select Restart, then pick Troubleshoot → Advanced options → Startup Settings → Safe Mode.)

Step 4: Run the Avast Uninstall Utility.

Step 5: Select the checkbox to remove all components, including the self-defense driver.

Step 6: Click Uninstall and wait for completion.

The utility will quarantine and remove core protection modules that resist normal uninstall attempts. This is especially important if you're installing Avast premium security or another Avast Windows antivirus version and hitting compatibility errors.

Why Safe Mode?

The self-defense driver prevents external programs—even Windows itself—from deleting active security files. Safe Mode disables non-essential services, allowing the removal tool full access. This prevents "file in use" errors that would otherwise force a second restart.

Cleaning Up After Uninstall

Even after both steps, some registry keys remain. For advanced users: open Registry Editor (`Win + R` → `regedit`) and search for "Avast" in HKEY_LOCAL_MACHINE. Delete any remaining entries. If you're not comfortable with the registry, skip this—it's optional and rarely necessary.

Pro Tip: If you're simply upgrading from Avast free antivirus to the premium version, don't uninstall first. Run the premium installer directly—it'll upgrade in place without removing registry settings or losing your license history.

Comparing Your Options

If malware protection is your concern and you want to audit alternatives, learn what features distinguish Avast's free tier from paid options. Some users prefer Malwarebytes Anti-Malware for on-demand scanning alongside a lightweight primary antivirus rather than a full suite.

Verifying Complete Removal

After restart, press `Win + R` and type `msconfig`. Go to Services and search for any remaining Avast entries. If none appear, the removal is clean. Your next antivirus installation should proceed without conflicts.

Following this approach to avast how to uninstall ensures no orphaned files interfere with system stability or future security software installations.