[Fixed] Avast Won’t Uninstall

Recently, numerous users have reported that they face several issues while trying to uninstall the Avast software from your device. No doubt the situation can be quite frustrating when Avast won’t uninstall from your device. Most of the time, Avast gets uninstalled from your device but left some files on your device.

Hence, you need to follow proper procedures in order to uninstall Avast antivirus from your device completely. If you are frequently getting the same issue, then follow this guide in order to get rid of this situation.

Why Avast Uninstall Utility is Not Working?

When you are trying to uninstall Avast antivirus from your device, Avast installs a mock OS to complete the uninstallation process automatically. It will force your device to reboot in Safe Mode.

When Avast proceeds to uninstall, it fails to delete the uninstaller and registry keys and some files, but in order to complete the uninstallation process, it is important to delete the residuals files to avoid such a situation. 

Next, proceed for uninstalling Avast antivirus from your device.

How to Uninstall the Avast Antivirus Completely?

There are certain cases when you have to uninstall Avast antivirus from your device. Hence, follow the guide to uninstall Avast antivirus from your device completely.

Method 1: Delete Avast as the Default OS 

While uninstalling Avast antivirus from your device, Avast creates a small OS. This Operating System allows your device to boot into Safe mode and restricts the uninstallation of Avast files from your device.

Therefore, you need to remove the default OS. To do that, follow the steps mentioned in the section below.

Step 1

First of all, press the Windows key along with the R key to launch the Run dialog box. Now, enter ‘sysdm.cpl’ in the Run dialog box and press the Enter button to launch the Advanced System Properties tab.

Step 2

After that, move to the Advanced section and then select the Startup and Recovery option under the Settings section. Thereafter, choose the default operating system under the Default Operating System section. After choosing the desired option, click on the OK button to save the changes.

Step 3

Again, launch the Run dialog box and then type ‘msconfig’ in the Run window. Press the Enter button to open the System Configuration window on your device.

Step 4

Thereafter, launch the Boot section under the System Configuration section. Next, you should choose the Avast OS and select the Delete button. When you are done, restart the system.

Now, the system will start normally and Avast has successfully completed the uninstallation of the residual files.

Method 2: Manually Remove Trusted Installer Files 

In case, the above method fails to clear the Avast pop-ups, then you need to manually clear the Avast files. Hence, you can apply this process to take control of the trusted files and able to delete the files from your device.

To perform this method, follow the steps mentioned in the section below.

#1. At first, move to the ‘C:\ProgramData\AVAST Software\Avast\’ location and then choose the file or folder that you need to delete and right-click on it.

#2. Now, choose the Properties option from the drop-down list. Next, click on the Security section and then select the Advanced option.

#3. Thereafter, select the Owner window and you will find the TrustedInstaller which is the current owner.

#4. After that, select the Edit button and then try to change the owner. Choose either your account or the Administrator. But it is better to pick up the Administrator as this will be the best option.

#5. Thereafter, click on the OK button to save the new owner. Now, keep on clicking the OK button until the files and folders window is closed.

#6. Move back and delete the files and folders. Do repeat the steps for other files and folders.  Thereafter, move to the location ‘%windir%\WinSxS\’ and search for all the files which are associated with Avast. When you get them, press the Delete button to remove them.

Once you are done, reboot your device.

Hopefully, after applying these methods, you can easily resolve Avast uninstall utility not working problem.