VS 2012 debugging Unexpected symbol reader error while processing <file.exe>

Question

I have a problem with debugging my program in Visual Studio 2012 - when I try to debug the code by inserting some breakpoints, they seem not to work - when I hover on them a message pops up

The breakpoint will not currently be hit. Unexpected symbol reader error while processing <file.exe>

I tried searching for similar problems in the internet but I haven't found any solutions I'd appreciate any help, thanks!

Answer 1

For Visual Studio 2017, closing all open instances and restarting worked for me. I might have gotten away with closing fewer, for example instances with unrelated solutions open, but I have not tested that.