While the Apple iTunes music store is a convenient and reliable way to download and listen to music, podcasts, and more, users sometimes encounter error 3259 when trying to connect.
FIX ERROR 3259 ON ITUNES – INSTALL IOS 13.4
After trying each of these troubleshooting steps, reconnect to iTunes. If you still can't connect, move on to the next possible solution.
Update your time settings. Since iTunes checks your computer’s date, time, and time zone settings, make sure they’re correct. If these settings are incorrect, it could be the reason you can’t connect to iTunes on a Windows PC or Mac.
Check your network connection. If your internet connection is lost, you will not be able to connect to iTunes. Check if your internet connection is working properly, and then reconnect to iTunes.