Posted by dellus on Feb 09, 2021; 6:04pm
URL: https://forum.librecad.org/LibreCAD-2-2-0-rc-2-1-will-not-install-on-my-Windows-10-tp5720173p5720177.html

I can't help with this, but for somebody competent looking into it, it would be helpful to know what Defender does say exactly.