Won't let me install anything

So I got Comodo two days ago. Loving it till now. It’s light and has cleaned up my system.
I came across a problem today and I can’t seem to fix it.
At first, I downloaded a program but it did not let me install it.
I tried installing another program, same message again, and it just exists.
I’m sure those programs are safe and this is a false positive.
I tried to disable Comodo but still it won’t let me install.
I really need to know how I can install a program after Comodo detects it as a Malware…