Unable to copy a file from obj\Debug to bin\Debug

Question

I have a project in C# and I get this error every time I try to compile the project:

(Unable to copy file \"obj\\Debug\\Project1.exe\" to \"bin\\Debug

Answer 1

I had same problem, after read your answers , went to Task Manager and searched for app.exe because i believe maybe it doesn't close .
And found it , select it and do END TASK .my problem solved.