Help. My iTunes stopped working. Will not connect to server.

Connect iPhone to Computer

Use your USB lightening cable --> Resolve USB-related alerts in iTunes - Apple Support

If unable to connect --> If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support

For your Windows PC —> Troubleshooting issues with iTunes for Windows - Apple Community

Use genuine cable --> Identify counterfeit or uncertified Lightning connector accessories ...

See how to --> Sync your iPhone, iPad, or iPod using iTunes on your computer ...

To reset the passcode -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...

Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support

If you are experiencing an issue not listed here, contact support