Posted by: Josh | August 23, 2010

Fixing “Application not installed” error in Windows Phone 7 project in Visual Studio

The problem occurs when you try to compile and run a Windows Phone 7 project, resulting in an alert saying “Application not installed”.


There’s a good chance this started happening after you migrated the project, or perhaps pulled a copy from source control.

The solution here is simple, though not immediately apparent. Change the “Solution platforms” drop list to “Windows Phone”.


Re-run it, and the emulator will be able to run the app again.

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