iTunes homesharing does not work since updating to Windows 10. Please only answers for an average Joe.

Hello there, John.

It sounds like your Home Sharing has stopped functioning since upgrading to Windows 10 on your PC. The following Knowledge Base article reviews some great, in-depth steps to troubleshoot:

Get help with Home Sharing

Before you begin

On each of your devices, check that you've turned on Home Sharing.

Wake your Mac or PC and open iTunes

Make sure that the computer you want to share or stream content from is on and awake, and that iTunes is open. If iTunes is already open, quit and reopen it.

If you're using a Mac with an Apple TV, you can set your Apple TV to wake your Mac for services like Home Sharing. On your Mac, go to System Preferences > Energy Saver. Select Wake for Wi-Fi network access. Learn more about Wake on Demand.

Check for software updates

• Install any available updates for your Mac or PC.
• Make sure any computers used for Home Sharing have the latest version of iTunes.
• Check that your iPhone, iPad, or iPod touch has the latest version of iOS.

Home Sharing for Music isn't available in iOS 8.4 and iOS 8.4.1. Update to iOS 9.

Use the same Apple ID across all your devices

For Home Sharing, you’ll need to use the same Apple ID across all your devices. Here’s how to check the Apple ID on each device:

• On your Mac or PC, open iTunes and look under File > Home Sharing, choose Turn Off Home Sharing, then set up Home Sharing again.
• On your iPhone, iPad, or iPod touch, go to Settings > Music or Settings > Videos.
  
• On your Apple TV (4th generation), look under Settings > Accounts > Home Sharing. On earlier models of Apple TV, look under Settings > Computers.
  

Add or deauthorize a device for Home Sharing

You can set up Home Sharing on up to five computers. If you already set up five computers and want to add another, you can deauthorize one or more of your computers in iTunes. Go to Account or Store and choose Deauthorize This Computer.

Check your network connection

For Home Sharing, all of your devices need to be on the same home network.

• If you have more than one router, make sure that all of your devices are connected to the same router.
• If you use a Virtual Private Network (VPN), keep all devices on that VPN, or disconnect all devices from the VPN.
• If you have a guest network, make sure that all of your devices are on the same guest network.

Restart and update your router

1. Turn off your router, then turn it back on. Check the router's manual for help.
2. If you're using an AirPort or Time Capsule, check for firmware updates. If you're using a different router, contact the manufacturer for help.

While your router is off, you won't be able to use Internet services like Voice over IP (VoIP) for phone calls, and you might need to reset your other routers.

Check settings for ports and firewalls

1. If you're using a Mac, go to System Preferences > Security & Privacy and select Firewall. If your firewall is blocking all incoming connections or allowing only essential services, click Firewall Options and edit your settings.
2. If you're using a PC, or you have another firewall set up on your computer or router, make sure TCP port 3689 and UDP port 5342 aren't closed or blocked. Get help with third-party security software.
3. Try to stream your shared iTunes content from a different computer, or to a different device.
4. Try to connect your devices to a different home network.
5. Contact your Internet service provider or router manufacturer for help.

Learn more about TCP and UDP ports.

Thanks for reaching out to Apple Support Communities.

Kind Regards.

Hello again, John.

Thanks for the follow up on your issue. Due to the nature of your question, it may be best if we get you in contact with someone who can look into this further. You may find more information by using another one of Apple's support resources - https://getsupport.apple.com

Cheers.