Need help with Port 3689

I have been having the same problems except it is my new BT Home Hub 2 which is causing all the problems, when I switched back to my D-Link router all was fine, I also followed these instructions but no change.
http://discussions.apple.com/thread.jspa?messageID=8436027
Has anyone succeeded syncing ATV with iTunes using a BT Home Hub 2 ? If so details please.
Terry

I've had this port problem on and off for over a year. It fixes itself sometimes and others I have to try "stuff" until I can get a sync and then just wait for the other shoe to drop. Consistently after a restart iTunes recognized Apple TV but when trying to sync I get the error and then Apple TV disappears from my iTunes menu.
This time the solution was doing this: http://support.apple.com/kb/TS2709?viewlocale=en_US even though I use McAfee. I now have both firewalls enabled but allowing port 3689. *Fingers crossed* that it'll hold.

Refer to this: http://support.apple.com/kb/TS1453

It's important that the router's firewall allow the appropriate ports to be open, as well; in my D-Link DIR-655, there's a port forwarding page where specific apps/ports can be allowed. I added UDP 5353 for the Apple TV (for which I have assigned an IP rather than have it dynamically assigned) and the problem appears to be solved. If this ends up not being a solution, I'll report back.

BTW, my setup was slightly more complicated than "normal," as I have all of my media content residing on a NAS. Didn't tweak any of the router settings for the NAS.

Welcome to the  Discussion Forums.

Not really up to speed on PC's but can you elaborate on your error, does it say the port is blocked or does it just say there is an error, does it give an error code.

Just bought my Apple TV today and I'm having the same issue. The Apple Support document talks about enabling "iTunes File Sharing" in the Sharing tab of System Preferences, but that option isn't there in Leopard. The Firewall tab is located under "Security" in System Preferences, but there's nothing in there that helps either.

I ran into the same issue. There's another thread somewhere about it. I appears there is some problem with the iTunes upgrade. The solution is to reinstall iTunes 7.6. You don't need to uninstall iTunes, just get the installer and reinstall and the firewall issues will go away. Worked for me.

Message was edited by: rkachel

Reinstalling iTunes worked to a degree. It began syncing just fine and then I ran into a new problem. It will sit and say it is syncing for a few minutes, then the Apple TV suddenly disappears from my device list and the shows that were syncing disappear from the Apple TV. If it weren't already past midnight I might consider taking this thing back.

OK, I had the same problem after installing 7.6 and, after reading through the forums, decided to Repair Permissions on my iMac's drive. After doing this and rebooting, all is well!

If you are on a Windoze machine, reinstalling iTunes may fix the problem. My guess is that uninstalling and re-installing iTunes would for sure.

I tried this, and it did not work. I've even tried uninstalling and disabling all firewall software, and I still get this error message. There isn't a problem w/ my network, as a MacBook that's on the network will sync fine - there's just a problem with my computer (Win xp).

Just set up my ATV this w/e and had the 3689 port error come up. Didn't go down the route of installing/re-installing iTunes but tackled it from TCP/IP settings. If you can connect via Ethernet then do so and configure the settings on the ATV screen. This will allow you to Sync. The Wireless setup might have picked up the TCP/IP settings of your router connected to the internet i.e. your ISP IP address. Change the connection settings to your local network IP & subnet mask set up and it should work fine.

I'm having the same problem with port 3689. have tried most every workaround i can think of, including the multiple suggestions on this site.

unfortunately, I may end up returning Apple TV if i cant resolve the issue.

I am running iTunes on a windows machine that is a 'spare' to sync data to the apple tv. I didn't notice this until after I applied the latest patch or upgrade to Apple TV. Frustrated, I took the advice of others in this list and ran the 'repair' in add/remove programs on Windows for iTunes. It is syncing now.

You don't have to toally uninstall, just repair. I know I know, PIA.

I am having the exact problems described above:

Check that any firewall software running on this computer has been set to allow communications on port 3689

Win XP SP3
ATV version 2

I can see the ATV in itunes and even play music through the ATV on my television. I cannot browse iTunes or sync. any media (movies, shows, photos) to the ATV.

I understand that this appears to be a pretty widespread problem and multiple people are reporting the error. If anyone has any ideas they would be greatly appreciated.

I also have this problem on an imac running itunes 7.6 and updated apple TV software (new update).

I've tried re installing itunes and I've also repaired permissions and nothing. Not a happy chap 😟

any other ideas guys?

I can rent movies thru ATV--but not showing up in iTunes device list. So with my Linksys router, I can access my router settings on Linksys website. I enabled port 5353 and 3689 this way, and 2004(?) but no change in the device listing in iTunes. Anyone else go this route with their respective router? This seems to be somewhat 'un-Apple-like'