Disabling Windows Defender permanently on Windows 11 is not recommended, and somewhat challenging. However, you can temporarily turn off real-time protection if it's blocking you from doing something.

Toggle the Windows Defender Firewall switch to the Off position. Do the same for Domain network and Private network as well. You will see the changed status as follows. Block all incoming ...

Under the Windows Security window ... button next to Microsoft Defender SmartScreen to turn it off. To turn off Microsoft ...

Microsoft has confirmed earlier today that it has fixed a major issue with Windows Defender wherein it would incorrectly display "Local Security Authority protection is off" even when the feature ...