By the way, which AV software was it for you? You only said Windows, but I am also on Windows 10 with all the latest updates (that's where I am developing this and building the installer) and I didn't get any warnings. I would've thought that I'd learn about at least the standard Defender warnings myself while creating the installer. Or are you using additional software? If so, just get rid of it, it just doesn't make sense anymore nowadays, Defender is enough and beside that it's more important to develop good habits like double-checking locations where you are getting software from, not clicking random links from e-mails or chats, keeping your system updated, use strong (and varying passwords) and so on.
It's Microsoft's own AV software. I have a lot of opinions on this, but that's waaayyy outside the scope of this conversation. ;3
Basically, my point is that AV software is becoming more an annoyance than a help because of stuff like this.
As far as I know the OBS dev team plans to implement a plugin manager at some point, although there is no ETA. This is the only thing that will probably finally solve the issue with AV detections on OBS plugin installers.
The good news is, now that I have to fix that bug and create another installer this also means rolling the dice again, maybe we get lucky and AV likes the next installer better :-D
Thankfully, as I'd mentioned before, most of the time, it's a case of "seldomly-downloaded" software. Now, it actually pounced, much to my extreme annoyance.
This all begs the question: Is Microsoft actively trying to discourage us from learning how to write our own software and make it available to others? I'd also argue that Apple does the same thing.