Can i disable security in Cubase 11?

Hi,
It suddenly now seems that when I add a third part VST instrument, it keeps coming up with ‘invalid password’ when it isn’t. When I disable Windows Defender then reinstall the VST, it works. Is there a way of stop Cubase security from marking VSTs as a threat?

Cubase does not have such a function, so this must be coming from something else.