home sharing does not work with new mountain lion update.

Having the same issue here since updating to iTunes 10.6.3.

I am having the same issue. Apple, please fix ASAP.

Our Apple TVs continue to lose connection ever since installing Mountain Lion on the host computer. The only thing that fixes them is to quit and relaunch iTunes, which only works unti the ATV goes to sleep. If a movie is paused for more than a few minutes and the ATV goes to sleep, pressing play again on the remote is greeted with "There are no movies on this computer" or "Turn on Home Sharing."

If we stop a video on one ATV and attempt to resume it in another room, the error begins again. The other ATV can't connect until iTunes is relaunched.

My guess is that it has something to do with the new [annoying] security settings. But I still haven't found a fix other than restarting iTunes everytime we want to watch something from our downloads. Fail.

Having the exact same issue.

This is ridiculous.

I am running Lion 10.7.3 and iTunes 10.6.3. Restarting iTunes does not fix anything. Right now my Apple TV is almost useless.

Was hoping this was some minor configuration issue on my end, but it seems to be widespread...

imac27 + mountain lion update cancels my ATV2 despite restarts to computer, itunes 10.6.3, and ATV. It keeps telling me to turn on home sharing despite the imac and atv showing that both are turned on. Looking for ideas/help.

Same issue here. Apple TV is useless right now.

Same thing is happening here, since updating to Mountain Lion.

Not sure, but seems to be an bug in iTunes 10.6.3

Apple used to pay me to regress their bugs. They don't anymore so I don't anymore.

I expect an update to be released in coming weeks that makes this all go away.

In the meantime, I've set my Mini to "never sleep" and all my ATVs work.

Mountain Lion since I installed on my two machines, iTunes has stopped seeing my NAS, I restarted the services of the NAS, both authorized and unauthorized computers and many other things. All that remains is to re-Lion. My NAS is a D-Link DNS-320 Sharecenter, I've had problems with the upgrade to Lion, and silly me, I'm back to update a Mountain Lion. My PC with iTunes if you see instead.

My bad. Under a previous post, I stated I had lost my home sharing with itunes but have now uncovered my problem: There are two areas on the ATV2 you can sign in with your account settings. One is Home Sharing and the other is under Computer which is the MASTER sign in for your ATV2 account linking it to iTunes. After further exploration, while my wife and I were holidaying, my adult daughter changed the 'computer' sign in to HER Apple account sign in on the ATV2. I kept trying to change it back on Home Sharing when signing in there but obviously that didn't work because the master sign in was hers (computer). Once I logged her out, then signed back in using my Apple account sign in, all is well and working as usual. Sorry for the confusion. iMac27 + Mountain Lion, ATV2, iTune 10.6.3

i'm also having this problem. I have a 3rd Gen Apple TV in my main room and 2 2nd Generation (720p black) ones. Ever since the Mountain Lion update, my hub (imac with all of my movies/music loaded) keeps taking forever to load the sharing library, whereas with lion it was instant. I have a 105 mbps connection and Time Capsule router and had absolutely no problem until i updated all of my computers to mountain lion. Please fix Apple!!!!! It worked so well a few weeks ago!!!!!

if its a bug in itunes, have you restored to early version?? im new to apple so is this possible?

also has anyone heard from apple about this issue as its driving me nuts

cheers everyone in advance

What seems to be happening is the iMac doesn't wake up from sleep when the Apple TV sends a request for the iTunes library in HomeSharing. Honestly, it has never worked for me correctly. It's a hit or miss. I have my iTunes library pointed to my iMac; but I store all my media on my NAS. When the iMac isn't asleep, this works great. However, as soon as the iMac goes to sleep, it doesn't want to wake back up. I have ensured that my settings are correct (see attached screenshot). If anyone has any suggestions, that would be awesome. TIA.