Visual Studio 2013, changes not showing in debug

Question

Have recently upgraded to Visual Studio 2013 Pro and am having some teething problems.

Primarily if I change any HTML or CSS in either a .aspx page for Web Forms or

Answer 1

I was experiencing old code in the debugger with a console application calling a DLL. I believe it was occurring because the previous version of the DLL was installed in the Global Assembly Cache (GAC), and the Visual Studio debugger was calling the DLL in the GAC (Which had the old code) instead of the current version. I uninstalled the DLL from the GAC and the problem was resolved.

Uninstall an assembly from the GAC (MSDN)