Airport 'unknown error occurred (-15000)'

I have the same problem, except mine is an unknown error (-3256). Lovely. Must be a software update problem. FIX IT APPLE!...

I'm getting the -3256 error after an upgrade to itunes 8

same here, worked fine before update. FIX IT!!!

Same trouble - gotta be iTunes 8 - impacts both of my AE (one n, one g)

Same here (error -15000) but it helps to restart the AirPort Express, until it happens again...

Oh, no, this time it didn't help... 😟

This seemed to have helped:
Log in to the AirPort Express using AirPort Utility and click the "Music" section and uncheck "Enable AirTunes". Click "Update" to restart the base station and then do everything again except for checking "Enable AirTunes" instead.

I have the same problem too. It's been working fine since I bought the AE in August, but tonight I cannot get it to stream music at all, and it comes up with the -15000 error.

I've rebooted both my iMac and the AE, switched Airtunes off and back on again, configured my Network and Firewall settings as per the instructions on http://support.apple.com/kb/TS2278, but still nothing.

I don't think it's iTunes 8 (in my case) as I've had that installed since it came out and I've used Airtunes since then.

Apple, is there a fix in the works for this?

Thanks.

There's something weird going on with this. It played the songs in a playlist earlier, and after it stopped and I went to play another playlist, it came up with the error message again. I did nothing except hit play in iTunes.

I came back to the computer a few minutes ago and again it gave the error when I clicked play. I tried it again on the off-chance and it started working.

Is there a chance I have a faulty Airport Express?

Okay, I've found that changing the 'Configure IPv6' setting to Off (and applying the changes) works.

This is found in System Preferences -> Network -> Airport -> Advanced... -> TCP/IP

This contradicts the instructions in http://support.apple.com/kb/TS2278 which advises to make sure it's set to Automatically. When set to Automatically, I find it works maybe once in every 10 attempts. At least I know it's not my AE that's broken.

However, do you need IPv6 set to Automatically for anything else?

I am also having the problem described here. I did not yet try the solution above but so far nothing else is working.

OK I have a new one for everyone

I have the setup below and if I reboot the Mac open itunes and select multiple speakers and first select computer, whichever set of remote speakers I choose first will work OK, if I choose the second set I get the error -15000. I have done all the firewall and TCP/IP tricks discussed above but to no avail. Help me - this is driving me mad

Mac Mini 10.5.5
2 x Airport Express firmware 7.3.2
itunes 8.0.2

I did use the following...

http://support.apple.com/kb/TS2278

Although the settings were correct I turned them on and off anyway.

Then I rebooted the Express unit.

Lastly, it seems to have issues with "what order" you add the multiple speakers. I got the 15000 error and turned off the airport speakers. Then turned on the computer speakers then added the airport speakers. Worked...go figure.

**ADDED*** Forget I said much....when I changed tracked in iTunes it got the error again on the airport speakers. I really wish someone knew how to fix this 😟

Message was edited by: Fredrrr

Seems to only work (the change speaker trick) for one album or play list. Once you chance the music you loose the connection.

This seemed to work for me, so far so good at least. I'll edit this post if it breaks again. I have no use for IPv6 anyway (no one does!) so I would suggest anyone having this -15000 error give it a try. Thanks Shaun!