Addictivetips published a tutorial about how to fix the invalid signature detected error in iTunes and Windows 10.
Invalid Signature Detected: FIX for iTunes Has an Invalid signature on Windows 10
If you use an iPhone and you do not own a Mac, you will need iTunes. iTunes syncs media files to an iPhone and backs it up so it's hard to avoid using the app.
Invalid Signature Detected: FIX for iTunes Has an Invalid signature on Windows 10
