I have 3 PCs, so to streamline development I use Onedrive (BEFORE YOU CRUCIFY ME: I use Github for bigger projects, I know Onedrive is risky). So I assume that's why I'm getting this error.

But this only happens on one of the computers, the other two are fine (my Surface does give me an error, but not this, and it works fine there).

I'd rather not reinstall VS again, and somehow I doubt that will fix it since it's an IIS error.

I've tried to get the IIS manager, but it refuses to install on Windows 10. Also I didn't have to do this on my other PCs so again I doubt this will fix it.