Windows 10: Latest update to Windows Defender breaks all WiFi access.

Discus and support Latest update to Windows Defender breaks all WiFi access. in AntiVirus, Firewalls and System Security to solve the problem; Yesterday when prompted by Windows Defender to download the latest update to Windows Defender definitions I did so. As soon as it finished... Discussion in 'AntiVirus, Firewalls and System Security' started by Dano2021, Feb 18, 2021.

  1. Dano2021 Win User

    Latest update to Windows Defender breaks all WiFi access.


    Yesterday when prompted by Windows Defender to download the latest update to Windows Defender definitions I did so. As soon as it finished installing, all WiFi access on my PC quit working. I tried to reconnect several times to no avail. Finally, I tried a different computer to test my WiFi out. It worked fine on the other system which was not yet updated. Today, I tried it again on my main system and it still didn't work so I turned off Windows Defender and tried again. It works fine when Defender is turned off.

    Please fix this. Otherwise I will be forced to run without Defender.

    I'm use WiFi Direct for a broadband connection. I also have a local private home WiFi network. Neither network is accessible when Defender is enabled now. It all worked fine before yesterday's update.

    :)
     
    Dano2021, Feb 18, 2021
    #1

  2. Windows update breaks WIFI and LAN network connections

    After applying the latest anniversary windows update my system loses all network access WIFI and LAN

    The network connections page is empty! Totally stuck, luckily had a restore point which restores connectivity.

    Observations

    • WIFI card in device in device manager
    • Device working properly
    • Nothing in network center (should be)
    • Ipconfig /all shows my Wifi afapter but it says Media disonnected.
    • Ping always says Transmit failure
    • Device is Realtek and it had USB ports which still works
    • Restore to pre update fixes problem although Network still looks odd

    Tried

    • Restarting

      Removing and reinstalling device
    • Disabling windows defender and firewall
    • NETSH ip reset etc
    • IPConfig /renew and IPConfig /release
    • Troubleshooting network problems - says could not fix try powering off etc.
    Other facts

    • Win 8 box upgraded to win 10 and insider program
    • Had Malwarebytes installed, uninstall didnt help
    • Only way to fix is to restore back to before windows update

    What the ****, its like being back in the old Win98 days! any suggestions?

    Update: So had to resort to fully disabling Windows Update because it totally breaks the network on every auto update. Not ideal. I dont even know if it will let me re-install Windows 10 because I upgraded an old Windows 8 version using
    the Insider program.

    I have 5 years of programs that I will lose either way so I guess I will just never be able to update W10.
     
    tomdeloford, Feb 18, 2021
    #2
  3. Windows update and windows defender issues

    We suggest you to avoid installing any cleaner or anti-virus software that may interrupt the function of Windows Defender. Make sure that Windows Defender is always on. To do this follow these steps:

    • On the Start menu, type Windows Defender and hit enter.
    • Click Settings.
    • Turn Real-time protection on.
    We also recommend you to install the latest update for Windows Defender.

    Should you have further questions, feel free to get back to us.
     
    Monica Cam, Feb 18, 2021
    #3
  4. Latest update to Windows Defender breaks all WiFi access.

    Do windows updates slow down the computer?

    Basically you might as well have the latest stable drivers on a Opticsl disk or usb drive and then updates thst dont bork the os, install updates, then dtivers and leave the system unplugged from ethernet/wifi then set parameters to prevent windows from updating automatically, save a list of settings you adjudted judt incase sn os update resets it to default etc.

    W10 sounds more like a pita than it's worth to install...
     
    eidairaman1, Feb 18, 2021
    #4
Thema:

Latest update to Windows Defender breaks all WiFi access.

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