The lastest iTunes upgrade broke my wireless syncing between my iPhone and my Macbook Pro

Question

iTunes was actually working before the latest update. Now I cannot wirelessly sync my phone to either my MacBook Pro or my PC.

Answer 1

Hi, AppleJR.  
Thank you for visiting Apple Support Communities.  
I understand that you are unable to sync via Wi-Fi after updating iTunes. I would start with going through the troubleshooting steps outlined below. 
Quit and reopen iTunes and restart your iOS device
Quit and reopen iTunes on your computer. Then, restart your iOS device.Restart your network router
Restart your home network router using the manufacturer's instructions. You may need to disconnect the power cord for 30 seconds or more.
Note: During this time, Internet services, such as a VoIP-based phone, won't work, and you may need to reset additional network devices.Check your network connection
Make sure that your Wi-Fi network has an active Internet connection.
Make sure that you connect your iOS devices and computer to the same network over Wi-Fi.
Check for network configuration changes that may interfere with syncing:
VPN configurations
Extending the Wi-Fi network through multiple wireless access points or routers
Guest networks or other security configurations that limit access between devices
Routers that configure different networks for different frequencies such as 2.4 GHz and 5.0 GHz
Connecting the computer over Ethernet
Wake up your computer and open iTunes. If your computer is asleep or iTunes isn't open, the device may not sync.
Update your router. If you're using an AirPort or AirPort Time Capsule, you can learn more about firmware updates. If you're using a router from another manufacturer, contact the manufacturer to ask about available updates.
Check for network interference
If you see performance issues when you sync over Wi-Fi, something may be causing wireless interference:
Microwave ovens
Cordless phones
Physical barriers, such as metal walls or distance between your computer, base station, and iOS device
Try the following to reduce network interference:
Move your iOS device and computer closer to the Wi-Fi router or base station.
Check for sources of potential interference.
Remove your iOS device from any case, stand, or attachment.
Open Safari and try to load a webpage.
Check firewall settings
If you enabled a firewall on your router or computer, make sure that your computer and iOS device can communicate.
Follow these steps to use the built-in firewall option with iTunes on your Mac.
For third-party firewalls and security software, see the developer or manufacturer for assistance.
Mac computers use port 123 to set the date and time automatically. Incorrect date and time on a computer or iOS device can cause connection issues. If you don't know if your router has a firewall or if the required ports are open, follow these steps:
Enable Wi-Fi syncing for additional iOS devices on your network to see if they have the same issue. (See the previous steps to enable Wi-Fi syncing for additional devices.)
Test your device on a different network. If the device works on another network, the issue may be your router or network configuration. Contact your router manufacturer or Internet service provider for additional troubleshooting.
If you use another security or firewall software on your computer or router, you can troubleshoot security software issues, contact the manufacturer, or check the documentation to learn how to open TCP ports 123 and 3689 as well as UDP ports 123 and 5353.
iTunes 10.5 and later: Troubleshooting iTunes Wi-Fi syncing
-Jason H.