When installing Visual Studio 2017 Professional 15.9.0 the installation hangs at 97% while installing Microsoft.VisualStudio.AspNet45.Feature.
I'm posting this only because it seems to be a problem that is almost two years and is still an issue.
There are several posts like this one: https://developercommunity.visualstudio.com/content/problem/24739/installation-stuck-at-applying-microsoftvisualstud.html#reply-form
Most indicate the issue has been fixed in later versions, but that doesn't seem to be the case. I let the process run over night and it never went anywhere.
