Windows 8 and 8.1 Forums

Can't connect to Xfinity Modem with Win8

  1. #11

    Thanks broe23, I tried to uncheck the IPv6 in the SMC modem, which I am logged on to, but I couldn't find the place to do it.
    I have been using the speed test recommended in the stickies of this forum and I am finding that my Win 7 machines are consistently faster than my Win 8 box. The speed on the Win 7 machines is ~29.5 mbps and the Win 8 is ~24.5 mbps. I'm not complaining because that is essentially a small difference. Do you have any idea about the possible cause of the difference?

    EDIT: Interesting: The Win 8 machine is dual boot so I booted in Win 7 and the results of Speed Test were 21.8 mbps That gets Win 8 of the hook and makes the machine the suspect. I'll add more as I run further tests.
    Last edited by okrobie; 30 May 2015 at 19:14.

      My System SpecsSystem Spec

  2. #12

    Central IL
    Posts : 3,468
    Linux Mint 17.2

    You need to disable IPv6 on the Network adapter on your computer. Comcast like others, are using a tunneling scheme.
      My System SpecsSystem Spec

  3. #13

    I got to checking and found that the Wi-Fi adapter in this box is a cheesey POS and I couldn't figure out how to disable IPv6, so I ordered a D-Link Xtreme N DWA-552. That should do the trick.
    Last edited by okrobie; 06 Jun 2015 at 20:44.
      My System SpecsSystem Spec

  4. #14

    I installed the new card and the download speed is on a par with the other machines in the household. Mystery solved. Thanks.
      My System SpecsSystem Spec

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Can't connect to Xfinity Modem with Win8

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