Click OK to retarget the projects listed below to Windows Phone Silverlight 8.1. Note: You should create copies of your Windows ...

Click OK to retarget the projects listed below to Windows Phone Silverlight 8.1.

Note: You should create copies of your Windows Phone Silverlight 8 projects and retarget the copies. Windows Phone Silverlight 8.1 projects cannot be retargeted back to Windows Phone Silverlight 8 or opened in earlier versions of Visual Studio. Only files modified during the retargeting process will be backed up in the solution directory. For detailed guidance, see how to retarget your Windows Phone Silverlight 8 app to Windows Phone Silverlight 8.1.