Keep in mind that you are vulnerable to virus and malware infection without an antivirus application. If you now open the Windows Security app in Windows 11 you will see that Virus & Threat Protection is completely gone. Open MSConfig again and remove the safe boot option: To reboot back to the normal version of Windows 11 we need to disable the safe boot option.
Do that for all users/entries in the list.All we now need to do is remove all users/principals from the list. We now have ownership of the Windows Defender application. Click on Advanced > Find Now and select Administrators.Open the properties of the folder Platform (right-click > select properties).Navigate to c:\programdata\Microsoft\Windows Defender\.
This way we can hopefully also prevent any updates from Defender. The next step is to take ownership of the Windows Defender application folder.
Without Safe Mode, we can’t take ownership of the MsMpEng.exe file. The first step is to boot into Safe Mode. This way the system principal can’t start the Microsoft Defender services. What seems to work though is taking ownership of the Windows Defender executable and remove all permissions from it.
We are first going to take a look at how to stop Windows Defender temporarily. In this article, I will explain how you can fully turn off Windows Defender in Windows 11 and how to stop it temporarily.
Keep in mind that Windows Defender is turned off automatically when you install another antivirus a pplication. Even though it’s one of the best antivirus solutions on the market today, you still might want to turn off Windows Defender for testing purposes or on devices that are not connected to the internet. It protects your computer against malware and virus threats. Microsoft Defender is in Windows 11 the default anti-virus/malware solution just like it was in Windows 10.