Same here bro! Thanx
I finally got it working with beta 13 build 3441 enabling the vpn compatibility mode.
This did the trick for meā¦running Windows 10 Insiderā¦
Glad to hear that VPN mode fixed the issue. We plan to make it the default in Beta14 which will also allow you to manually set the DNS in the UI
Thanks, same problem for me on Windows 10 Pro (10.0.10586.0) and Docker Build 1.12.0.rc2-beta16 (build 4760)
Turning off IPv6 and setting DNS servers to 8.8.8.8 worked for me
Windows 10 Pro
Version 1511
OS Build 10586.494
Docker 1.12.0-rc4-beta20 (build 5579)
there is no legacy software - just a new laptop. docker for windows installed in accordance to the instructions (and then - reinstalled just in case). I have exactly the same situation - initially and after dancing as described in different posts here and there: disable IPv6, set DNS 8.8.8.8 etc. For now going to ask to a voodoo priest for a help - maybe it gonna be more efficientā¦ 
PS C:\WINDOWS\system32> docker run hello-world
Unable to find image 'hello-world:latest' locally
Pulling repository docker.io/library/hello-world
C:\Program Files\Docker\Docker\Resources\bin\docker.exe: Network timed out while trying to connect to https://index.docker.io/v1/repositories/library/hello-
world/images. You may want to check your internet connection or if you are behind a proxy..
See 'C:\Program Files\Docker\Docker\Resources\bin\docker.exe run --help'.Iām in the same boat as alxll ā I get timeouts when trying to pull any image. Iāve tried all of the various suggested solutions like disabling IPv6 and setting DNS to 8.8.8.8 and deleting registry keys and so on.
I was fine a few weeks ago ā this started somewhere in the last few weeksā worth of updates (I donāt know exactly when).
I donāt know if this is mentioned somewhere but you also have to NAT your connection which for some reason is not happening automatically. In the latest build
https://msdn.microsoft.com/en-us/virtualization/hyperv_on_windows/user_guide/setup_nat_network
If you are still having issues you can use Microsoft message analyzer and trace the traffic.
https://technet.microsoft.com/en-us/library/hh848933.aspx
Today I have updated the docker with latest update but the situation remains the same:
Network timed out while trying to connect to https://index.docker.io/v1/repositories/library/hello-world/imagesā¦
I had the same problem. I deleted all the Hyper-V Virtual Ethernet Adapters, uninstalled Docker for Windows then reinstalled it.
To uninstall those adapters, since the Delete option is disabled when you go to Network Connections, use Device Manager to remove them:
Hope this helps!
I updated docker today morning (to v. 1.12.1-beta25 build:6833) and the problem disappeared!