Visual Studio 2015 RTM - Debugging not working

Question

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 against .Net Framework 4.6), it only opens a new tab in VS which is called Break Mode with the following text: The application is in break mode Your app has entered a break state, but no code is executing that is supported by the selected debug engine (for e.g. only native runtime code is executing). And if I check the Debug --> Module Window: VS2015Test.vshost.exe no symbols loaded (even if I click load symbol it does not work) VS2015Test.exe symbols loaded

And it also doesn't show the output on the console(it's a console application that just has the following lines of code:

class Program
{
        static void Main(string[] args)
        {
            Console.WriteLine("TEST");
            Console.ReadKey();
        }
    }

I tried to reinstall VS 2015, restarted the computer, deleted all files in %temp%/AppData/Microsoft/Visual Studio/14, started VS in Admin Mode but nothing seems to work.

One thing which makes debugging working is this option: Tools --> Options --> Debugging --> Use Managed Compability Mode

^^But that can't be the solution to use an old/legacy mode.

BTW: Debugging in VS 2013 is working fine.

Any help would be appreciated.

Answer 1

I had this issue, and none of the (myriad of) posts on here helped. Most people point towards settings, or options, turning on Debug mode, etc. All of this I had in place already (I knew it wasn't that as this was working fine yesterday).

For me it turned out to be a referencing issue, a combination of DLLs that were included were to blame. I can't say exactly what the issue was, but I have a couple of classes that extended base classes from another project, an implemented interface that itself extends from another interface, etc.

The acid test was to create a new class (in my case, a Unit Test) within the same project as the one failing to Debug, then create an empty method and set a breakpoint on it. This worked, which further validated the fact my settings/options/etc were good. I then copied in the body of the method that failed to Debug, and sure enough the new method starts failing too.

In the end I removed all references, and commented out all the lines in my method. Adding them back in one by one, checking Debug at each step, until I found the culprit. I obviously had a rogue reference in there somewhere...