Method 3: Disabling Windows Defender’s Real-Time Protection Once the process is complete, reboot your computer and see if the issue is resolved at the next startup.
Note: If you installed Avast in a custom folder, use the menu to browse for it manually before clicking the Uninstall button.
Here’s a quick guide on how to uninstall Avast with the official uninstall utility and remove all of the Avast code: You can do it conventionally via Programs and features but it’s recommended that you use the official Avast uninstall utility to remove every last trace of the 3rd party antivirus. Since the issue most likely arises because of a conflict between the built-in antivirus and the 3rd party security suite, your best chance of dealing with the issue and keep using an Insider Build is to remove Avast. Method 2: Uninstalling Avast and removing any leftover files
Restart your PC to revert to the latest stable build at the next startup.Next, click on Roll me back to the last Windows release.In the Windows Insider Program, click the Stop Insider Preview builds and hit Yes to confirm.Then, type “ ms-settings:windowsinsider” and hit Enter to open the Windows Insider Program within the Settings menu. Press Windows key + R to open up a Run box.
If you decide to do this, here’s a quick guide on how to stop getting Insider builds:
If you want to stay away from these kinds of problems, the best approach is to move away from the Insider program and start using the latest stable Windows 10 build. This issue is occurring because of the instability that many Insider builds have. Please follow each potential fix in order until you find a method that stops Windows Defender from blocking Avast’s VisthAux.exe. Below you have a couple of fixes that users in a similar situation have used to fix this behavior. If you’re third party Avast antivirus is being blocked by the built-in Windows Defender antivirus, there are a few methods that you can follow to resolve the issue. Because of this, using 3rd party anti-virus programs with Insider builds and Pre Release builds is less than ideal. Insider builds and technical previews are not properly tested and often spawn a wide array of unexpected problems. You are reading: How to turn on windows defender with avastĪfter investigating the issue, it’s very likely that the issue is exclusive to Windows 10 and only occurs on Technical Preview and Insider builds. The error message associated with this issue is “ Your organization used Windows Defender Application Control to block this app“. There’s been a recurrent issue with Avast antivirus where one of its executables ( visthaux.exe) is blocked from running by Windows Defender. Method 3: Disabling Windows Defender’s Real-Time Protection.