Can't run WPF app

Question

I have Visual Basic Express 2008 and .net framework 3.5 on xp sp2.

I create a new wpf application, when I try run the application I get the following error.

" 'Error while trying to run project: Unable to start program 'C:\Documents and Settings\Mike\My Documents\Visual Studio 2008\Projects\WPF\bin\Debug\HelloWorld.exe' Access Denied"

Any ideas?

**This problem only occurs with WPF application, winforms app runs just fine.

Thanks

Answer 1

Looks like some program has an exclusive lock on your executable. Try a tool like Unlocker or WhoLockMe (there are many others) to find out, which process locks the file. Kill the process and your application should start.

Best Regards

Answer 2

Are you running Visual Studio as an administrator on you pc? VS does not like it so much when it is not running as admin.

I dont know if this is still true with the express editions, but do you have to actually save the project before you can run the code? I have not used an express edition in a while but I remember something funky with how new project where created.

Answer 3

Did you try loading the program from inside Visual Studio using F11 or Control-F11, or did you use Windows Explorer instead? Make sure you are doing it from inside Visual Studio maybe.