Windows 7 -can't stream video to Apple TV-network times out

[9underpar]

Hi:
I can't stream video from itunes on a Windows 7 pc, to Apple TV (ATV)(3rd generation). The ATV is only a week old but has been replaced with no luck. When I try to stream video, an error message pops up: "An error occurred while connecting to the AirPlay device Apple TV. The network connection timed out".

- the ATV is not the issue as it was replaced
- I can stream audio and photos from itunes, but can't stream video (which is in the proper format for ATV)
- I installed itunes on an old xp machine and video streaming works!
- both the xp machine and the Win 7 machine are on the same network, so the router must be ok
- all firmware and software is up to date and everything has been rebooted (several times)
- the error happens no matter if it is a wireless or wired connection

Since XP can successfully stream video and is on the same home network as Win 7 and we know that both the ATV and the router are working properly, it seems to me that there must be an issue in my Win 7 config. Does anyone have suggestions???

Thanks for your help!

 

[kingscurate]

Have a look at the following two links, this sorted my issue with apple tv.
They may help.


Troubleshooting Home Sharing
Well known TCP and UDP ports used by Apple software products

 

[9underpar]

Kingscurate: thanks for your advice. I have already done all of these things in the 2 articles. I've tried The Win 7 pc with firewalls on and off, anti-virus on and off, Universal Plug and Play both enabled and disabled. I can see my library in ATV that is located on the Win 7 pc. Because I can stream music and photos with no issues but can't stream video, I don't know what else to do. And, as mentioned, everything works flawlessly on my old clunker XP laptop- streams video, music and photos on the same network as the Win 7 pc. I can also stream from my ipad to the ATV with no issues. Thanks again.

 

[Kurtmann]

Any update?

Sorry to ressurect this old thread, but I have exactly the same problem and havn't found it addressed anywhere else on the internet. So, have you solved the problem?

 

[9underpar]

My issue was fixed by completely deleting my anti-virus and firewall programs. Just turning them off did no good.....they had to be actually deleted. I switched to Bitdefender Free Edition (Free Antivirus Software - Download Bitdefender Antivirus Free) and everything has worked perfectly.