VS-2012 : Breakpoint will not currently be hit. No symbols have been loaded for this document

Question

I am not being able to debug the code for a MVC4 application in VS-2012. The same code was running fine a few days back. Error as below: Breakpoint will not currently be hit. No symbols have been loaded for this document.

I have tried below possible ways:

• Cleaning and rebuilding the solution.
• Setting 'Just my code' to false and true both.
• Repaired VS.
• Cleared the bin and obj folders also related GAC and temp asp.net folder.
• Checked in Debug->Windows->Modules, it gives 'Can not find or open PDB file', when tried to load manually, it can't find the pdb file though file is present in the mentioned location.
• Checked that code is building in Debug mode with no optimization and Debug set to true in web.config file as well.
• The problem persists even if I create a new project in VS.
• Also tried reverting all the changes and took the latest version from TFS.

Any help on this is highly appreciated as I have gone through many threads but couldn't find a solution.

Answer 1

Another thing to try is to enter the project properties (right click on the project in Project Explorer), Click the "Build" tab, Click "Advanced" in the lower right corner and choose an Output other then "None" (for example PDB-only). This should generate the necessary PDB file.

Answer 2

What worked for me was to open the solution as administrator, right click on the web project--> properties -->Web--> IIS express--> project URL same as in your iis, create virtual directory. save, build, rebuild, publish, run.

Answer 3

One change did the trick for me, though not sure what exactly fixed it. Couple of projects were hosted in IIS. I deleted all the hosted sites form IIS, configured them again and that worked for me. However, still not sure what exactly was wrong in IIS but yeah, it was IIS.

Answer 4

Try exiting the IIS express, which will enforce visual studio to relaunch IIS express and load symbols.