If you prefer to remain within Visual Studio you can also change the encoding of the file by opening the file and then selecting “Save with Encoding”.
You will get a bunch of options here so be sure to select Unicode (UTF-8 with signature).
When you are prompted to replace the file simply say Yes and you should be all set.
Congrats! When you next run the Windows App Cert Kit you will see file encoding has passed getting you one step closer to completing technical certification on the Windows Store.