How do I get rid of the "Save changes to the following items?" alert when I first open an .sln in Visual Studio 2013?

This thing acts like it has something to do with "devenv.sln" and per this it may be fixed like so:

1. Go to: C:\Program Files (x86)\Common Files\microsoft shared\MSEnv
2. Find: VSLauncher.exe
3. Right-click upon it and pick: "Properties"
4. At the "Compatibility" tab of the dialog box which appears check the checkbox for: "Run the program as an administrator"
5. Finally, click: "Apply"