Visual Studio 2015 installer hangs during install?

Question

I downloaded the full ISO for Visual Studio Ultimate CTP 6. The installation program got to about the 90% mark, gauging by the progress bar, and just stuck there. There wa

Answer 1

I have experienced similar problems with Visual Studio 2015 Update 3. In my case core issue was corrupted windows installer cache (C:\Windows\Installer)

Here is the line from msi installer log:

MSI (s) (4C:64) [10:40:10:059]: Warning: Local cached package 'C:\WINDOWS\Installer\3442502.msi' is missing.

You should check installation logs if installation cache is corrupted same way. If it is you should pray for sfc utility to recover system integrity or you would reinstall windows from scratch as corrupted windows installer cache is a complete disaster and a reason to perform clear windows installation immediately.