I've been searching around and see that there are more people with this problem but i haven't seen a solution so far.
I just cant get iTunes to see my AppleTV. I've tried several options. Other computers in my network don't have the problem and see the appletv

What i've tried so far:
- Restarted AppleTV
- Restarted Computer
- Made a new library in iTunes
- I've checked with pinging my appletv and the packages get accepted
- Tried a solution by removing NetworkInterfaces.plist and reboot

Stil it doesn't work...

Is it something with the network?

Thanks already for the solution!

what settings are you using as your Firewall settings??

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