How to Uninstall and Remove avast Completely in …
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1. Remove Avast as the default operating system and delete the Temporary Avast OS 1. Remove Avast as the default operating system and delete the Temporary Avast OSDuring uninstalling, Avast creates a small operating system that it uses to uninstall files. After it is done, the operating system does not seem to uninstall itself after you restart your computer. The reason behind this is that you cannot uninstall the default operating system. You might notice the Avast OS option when starting your computer. Leaving it as the default OS might keep booting your computer into the safe mode every time you restart it.This option will let you switch your default operating system back to . This will then allow the Avast antivirus to uninstall its residual files after you are done.Press Start/Windows Key + R to open the Run windowType sysdm.cpl in the Run textbox and hit enter to open the advanced system properties window.Go to Advanced tab. Tap on Settings under Startup and Recovery.Under the Default Operating System, you will find the dropdown box for choosing the default operating system. Choose the desired option and save the changes by clicking OKPress windows key + R to open runType msconfig and hit enterIn the system configuration window, open the Boot tabChoose the Avast operating system by clicking on it and then click delete. Allow the deletionRestart your computerYour computer will now start normally and Avast has will complete the uninstallation of residual files successfully.You can also set the default operating system by pressing esc or F10 or F12 (depending on your computer) during startup. This gives you the list of all installed operating systems and the option of setting the default OS. You can find the if yours does not work correctly.2. Use Avast Clear 2. Use Avast ClearAvastclear is an intuitive tool from the creators of Avast itself that is designed specifically to uninstall any and all Avast products installed on a computer.Click to download Avastclear. It will automatically prompt you to run the tool in Safe Mode. Run the executable Avastclear.Follow the onscreen instructions and browse to the folder in which you have installed the Avast product you want to uninstall. (If you’ve not used a custom folder, then leave it to defaults). Click on Remove. Restart your computer, and Avastclear will finalize the uninstallation when your computer boots up.Once you have no more use for Avastclear, you can uninstall it from your computer.3. Use the ESET Antivirus Remover tool 3. Use the ESET Antivirus Remover toolIf Avastclear fails to successfully uninstall Avast from your computer (which is quite unlikely) or if you simply don’t want to use Avastclear, you can use the ESET Antivirus Remover tool instead. The ESET Antivirus Remover tool is designed to be able to uninstall almost every single antivirus or anti-malware program out there, and that includes all Avast programs.Go and download an appropriate version (32-bit or 64-bit) of the ESET Antivirus Remover Install and run the utility. Click on Continue and allow the ESET Antivirus Remover tool to scan your computer for all previously installed. When provided with the results of the scan, select all of the Avast applications that you want to be removed from your computer and click on Remove.Confirm the action by clicking on Remove in the warning window that pops up. Wait until the tool displays a message stating “Applications successfully removed”. At this point, the applications you selected will have been removed and you can close down the utility.Once you have uninstalled Avast from your computer, you can go ahead and uninstall the ESET Antivirus Remover Note: You may need to restart your computer during or after the uninstallation process.To make sure that whatever method you used actually managed to completely uninstall Avast from your computer, simply go to Start > Control Panel > Add or Remove Programs (Windows XP, Vista or 7), Control Panel > Programs and features (Windows 8 and 8.1) or Control Panel > Programs > Programs and features (Windows 10) and make sure that there aren’t any Avast programs left in the list.4. Delete trusted installer files manually 4. Delete trusted installer files manuallyIf method 1 does not clear the Avast pop-ups, you will need to delete the Avast files manually. This method will allow you to take control of trusted installer files and the ability to delete those filesGo to the following location ‘C:\ProgramData\AVAST Software\Avast\’Right-click on the file or folder you want to delete and choose Properties.Next, click on the Security tab and then click on the Advanced button at the bottomNext, click on the Owner tab and you’ll now see that the current owner is .Now click on the Edit button and choose who you would like to change the owner to, either your account or the Administrators. If your account is an Administrator account, we suggest just picking Administrators.Click OK to save the new owner. Keep clicking OK until the file/folder properties windows is closed.Go back and delete these folder/filesRepeat the same for other files and foldersGo to this location (copy-paste it into your address bar and press enter) %windir%\WinSxS\ find all files associated with Avast and delete them using procedure steps 2 – 7Go to this location %windir%\WinSxS\Manifests\ find all files associated with Avast and delete them using procedure steps 2 – 7Restart your computer.It is not recommended to take ownership of trusted owner files, but if you are sure you are not going to use them again, you can just delete them. Use this as a last resort method.
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