I am running Windows 10 in a virtual machine with no internet connection and no shared folders, so there is little need for security.
1 I turned tamper protection off.
2 I tried to disable Defender through Group Policy, but it resets the policy to default after reboot.
3 I tried adding the registry key, and after a reboot, it works at first, but after a few minutes Windows deletes the registry key and re-enables Defender.
Can't figure out what to do...

Edition Windows 10 EnterpriseVersion 20H2Installed on ‎05/‎14/‎2020OS build 19042.685Experience Windows Feature Experience Pack 120.2212.551.0