No wifi after OS update

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Students complaining about not getting internet access when connecting to the public school wifi on their iphones. Issue occurred only after we enforced an os update from the portal to ios 14.

Confused about why this is happening because wifi working perfectly on other devices.

All Replies

  • Hexnode

    Chris Wheeler

    Moderator

    Hey, @henrietta. Thanks for reaching out to us.

    We’ve been getting a lot of similar queries lately and think this issue may have to do with the MAC randomization behavior introduced by Apple from iOS 14+ devices.

    If you don’t already know, a MAC address is the physical address that is used to identify a device on a given network. By default, iOS 14+ devices will use a randomized MAC address for each Wi-Fi network.

    This randomization behavior of the MAC address can be disabled by the student or from the Hexnode portal. To disable it from the portal, check the Disable MAC address randomization option in the Wi-Fi policy and associate with the required devices.

    That’ll resolve the network connectivity issue on the newly upgraded iOS devices. If you encounter any problem, feel free to reply to us back so we can address your issue further.

    Cheers!
    Chris Wheeler
    Hexnode UEM

    Solution
  • Participant

    Daan

    Participant

    @henrietta It depends on your network service provider and the network authentication settings that you’ve configured. For example, we have centuryLink set up in our environment which uses the MAC address of the mobile devices to provide or limit network access. So when you upgraded to ios14, mac randomization will have kicked in for all the existing SSIDs on the devices causing connectivity issues.

  • Participant

    Emersyn

    Participant

    Looks like upgrading the OS messed up our wifi settings too…students having to re-register via the captive portal to connect to the school wifi. Will they have to do this often?  This mac randomization behaviour has been a huge pain for users depending on network systems and processes that rely on mac address as the sole device identifier.

  • Participant

    griffith

    Participant

    @emersyn Private mac address stays consistent for a given SSID as long as the device isn’t wiped, so the they might just have to register one more time. This is, if auto login is enabled in your router settings ofcourse. Wouldn’t recommend disabling mac randomization as it could impact user privacy.

  • Hexnode

    Chris Wheeler

    Moderator

    Hey @emersyn,

    According to Apple, the private address for a specific SSID will only change if:

    • The device is wiped, or network settings are reset on the device.
    • Starting with iOS 15, iPadOS 15, and watchOS 8, if the device hasn’t joined the network in 6 weeks.

    So, the students will have to sign in via the captive portal just once more after the OS update unless the above-mentioned scenarios occur.

    Check out Apple’s doc for more information on the MAC randomization behavior on iOS devices.

    Hope this helps. Do reach out if you’ve further queries.

    Cheers!
    Chris Wheeler
    Hexnode UEM