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

1. Close your project
2. Delete bin folder

i find it work, :)

Answer 2

This is happening because [yourProjectName].exe process is not closing after finishing debugging.

There are two solutions to this problem.

1. Every time you make change to application, Go to Task Manager -> Processes -> [yourProjectName].exe, end this process. You have to end this process every time you make changes to system.

2. Add a exit button in your application to exit window and add these line to click event

   System.Diagnostics.Process.GetCurrentProcess().Kill();
   Application.Exit();
   

Answer 3

This happened to me at VS 2010 and Win 7.. Case :

• I can not Rebuild with Debug Configuration manager, but I can rebuild with Release Configuration manager

What I have tried:

• Check my account type at control panel - user account --> My Account is Administrator

• Set the bin folder not read only

• Add security at bin folder to Everyone

• stop the iis server

• Stop antivirus, check ridiculous running program using task manager and ProcessExplorer

• run VS as administrator

If All that way is still not working.

Then, the last way to try:

• close solution
• close visual studio
• start - shutdown
• press power button to turn on the computer
• login to your account which has administrator previlege at user type
• reopen solution
• rebuild
• that way working. All people call this way as Reset Computer

Answer 4

Run Visual Studio as Administrator

Answer 5

We recently experienced this on a WinPhone 8 project, in VS 2012 Update 2.

Inexplicably, the cause was using the Tuple type. Removing the code that used a Tuple the problem went away. Add the code back the problem returned.

Answer 6

If you look in the obj directory, and you don't see your .exe, it's possible that Avast! or other antivirus is deleting it. I would actually see the .exe show up and then disappear. As soon as I turned off Avast!, problem solved.

VS2010 throwing "Could not copy the file "obj\x86\Debug\[file].exe" because it was not found."