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Symptoms
If you are experiencing an issue where you can't pair Remote with iTunes or Apple TV or are having difficulty connecting to an iTunes library or Apple TV that you've already paired with and connected to before, review the troubleshooting suggestions listed in this article.
Products Affected
iTunes 7 for Mac, iTunes 7 for Windows, AppleTV, iPhone, iPod touch, iPhone 3G, iTunes 8 for Windows, iTunes 8 for Mac, iPod touch (2nd generation)
Resolution
Local Network Connectivity
Remote needs to be connected via Wi-Fi to the same local network that iTunes or Apple TV is connected to in order to pair and control those libraries. You can determine if your devices are on the same local network if their network configuration specifies the same router IP address. The router address will be a set of 4 numbers separated by periods. To locate your devices router IP address, navigate to the following locations:
iPhone or iPod touch: Settings > Wi-Fi > [Network Name]
Apple TV: Settings > General > Network
Mac OS X: Apple menu > System Preferences > Network
Windows XP: Start > Control Panel > Network Connections > [Network Connection Name] > Properties > TCP/IP Properties
Windows Vista: Start > Control Panel > Network and Internet > Network and Sharing Center > View Status > Properties > TCP/IPv4 Properties
Check System Requirements
The iTunes library or Apple TV that you are connecting Remote to must meet the system requirements in order to connect properly. For information about system requirements, see About Remote for iPhone and iPod touch.
iTunes Settings
In order to connect Remote with iTunes, iTunes must be open on your Mac or PC. You must also have the iTunes preference "Look for iPhone and iPod touch Remotes" enabled. This setting is enabled by default, however you can verify that it is enabled in the Devices tab of iTunes preferences.
A maximum of five Remotes can be paired to either iTunes or Apple TV. If this limit has been reached and a new Remote needs to be paired, remove Remote pairings in iTunes or Apple TV. In iTunes, click the Forget All Remotes button in the Devices tab of iTunes preferences. On Apple TV, choose Settings > General > Remotes.
Firewall Settings
If you have a firewall enabled in your router or computer, make sure that the firewall is not blocking communication between Remote and your iTunes or Apple TV. Remote uses TCP port 3689 and UDP port 5353 to communicate with your iTunes or Apple TV. To configure your firewall to add these ports:
For Mac OS X 10.5, you don't have to edit the port addresses, but make sure the firewall is not set to "Allow only essential services" as described here.
For Mac OS X 10.4.11 and earlier please follow these instructions.
For Windows Vista Firewall please follow these instructions.
For Windows XP Firewall please follow these instructions.
If you use other firewall software or hardware check the software documentation on how to open these ports.
Additional Information
Important: Information about products not manufactured by Apple is provided for information purposes only, and does not constitute Apple's recommendation or endorsement. Please contact the vendor for additional information.