Maybe someone here has figured this out. Is there a way to disable Tamper Protect in the image so I don't have to log into every system to manually disable it? Moving from 1809 to 21H2 has been a whole lotta "no fun".
Windows defaults to 0 or 1, but if you have Cloud Protection present it adds 4 to the value.
0 = Tamper Protection off, no Cloud Protection
1 = Tamper Protection on, no Cloud Protection
4 = Tamper Protection off, Cloud Protection off
5 = Tamper Protection on, Cloud Protection on
Why do you think it can't be changed live? It requires a reboot to take effect. While Tamper Protection is enabled, OTHER Defender settings cannot be modified -- which is why it's protecting those reg keys.