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I have a Nexus 7 running CyanogenMod 10.1. For some reason I cannot reach it from my laptop on the same wifi network. I cannot ping in either direction. In the past i have been only able to ping one way.

Just tried out on my HTC Sensation and haven't the same issue. Also the Nexus and HTC cant reach each other either.

I have had similar problems with other Android devices. In the past I was developing an app and I could not establish a socket connection from the Android device to my computer. Once I was able to successfully ping the laptop from my device everything worked.

Don't know if it is clear this isn't persistent. In the past I fiddled around and they eventually talked but there was no consistent solution.

I have observed this on 2 different wifi networks.

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In wireless Networks settings- check the following:

  • Make Sure "Guest Policy" is disabled or Unchecked and
  • In Advanced Option: WPA Mode is selected "WPA2 Only and Encryption is selected "AES/CCMP" only

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    how does this work? Any technical background of why this should be causing these obsure issues? Please add an explanation why you think that this would solve this problem - thanks! :) – benjamin Nov 4 '15 at 13:19
  • Also, wireless settings where? The router? Please clarify. – Tamoghna Chowdhury Nov 21 '15 at 9:47

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