This is what makes this situation so frustrating – I AM a Windows SysAdmin. I’ve manually run through:
Windows Server 2019 Datacenter Edition
IIS 10 Install
PHP 7.4.18 Installed
mySQL 5.5
Wordpress 5.7.1
I dont have mod_security running as far as I’m aware (certainly I didnt install it and havent enabled it).
Appreciate any pointers, of course.