I have installed VS 2015 RTM (nothing else) and I\'m unable to debug any solution, not matter if it\'s an existing one or a brand new one (created with VS 2015 and compiled
I got in this issue as well. I'm using VS 2015 (Update 3) on Windows 10 and I was trying to debug a Windows Forms Application. None of the suggestion worked for me. In my case I had to disable IntelliTrace:
Tools > Options > IntelliTrace
I dont know the reason why, but it worked. I found out the root of the problem when I opened the Resource Monitor (from Windows Task Manager) and I realized that IntelliTrace process was reading a tons of data. I suspect this was causing locks in vshost process, because this one was consuming 100% of a cpu core.