Visual Studio debug error about MSVSMON.EXE not appear to be running

I have a program which when I hit F5 to run the program it shows this error and doesn't run:

Error while trying to run the project, Unable to start program 'F:....` The Microsoft Visual Studio Remote Debugging Monitor (MSVSMON.EXE) does not apear to be running on the remote computer ...

This is while the project was compiling successfully before. Is there any project setting that should be set in a wrong way sometime!?

I'm using Visual Studio 2012 Update 2.

How do I connect to Visual Studio Remote debugger?

To perform remote debugging using Visual Studio: On the remote computer, in Visual Studio, choose Connect to Remote Debugger from the Tools menu. In the Connect to Remote Debugger dialog box, enter a connection string, and click Connect.

I've discovered that the reason is not about downgrading! It's about a tunneling software called "Proxifier". While it's running on the system, it causes the Visual Studio this problem.