Windows 10: Problem Windows Defender Update

Discus and support Problem Windows Defender Update in AntiVirus, Firewalls and System Security to solve the problem; i need to update my windows defender but it tells me the app couldn't check for virus and malware update definitions. check your network.... Discussion in 'AntiVirus, Firewalls and System Security' started by GodwinAlu, Nov 1, 2018.

  1. GodwinAlu Win User

    Problem Windows Defender Update


    i need to update my windows defender but it tells me the app couldn't check for virus and malware update definitions. check your network.

    :)
     
    GodwinAlu, Nov 1, 2018
    #1
  2. jsfitz54 Win User

    Windows 10 Anniversary Update Issues

    Problems with W10 Anniv auto update:

    Mom's: (x58 Xeon 5677) Windows Defender was not turned back on automatically (it was "on" in the 1511 edition) and she had a Trojan. Full system scan to eradicate.
    Her Epson printer was knocked off, had to uninstall by Device Manager pull USB cable and reconnect cable. W10 did the rest.

    Step-mom's: (HP pre built) Windows Defender not turned back on by default. Her USB Seagate Expansion Drive 2Tb was offline so all backup routines were halted. Had to rerun backup plan. Had her do a full virus scan.

    Step-dad's: (Dell Optiplex tweaked upgrades) Windows Defender not turned back on by default. Full Scan.
     
    jsfitz54, Nov 1, 2018
    #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, Nov 1, 2018
    #3
  4. Problem Windows Defender Update

    Windows Defender problem

    Hi Ernst,

    To troubleshoot this issue, we suggest that you check the Windows Defender service if it's running. If you are using a third party spyware/malware program, it may disable the Windows Defender service. To do this, please follow the steps below:

    • Press Windows + R key.
    • Type services.msc.
    • Right-click Windows Defender service and click
      Start.

    Let us know the result.
     
    Rafael Com, Nov 1, 2018
    #4
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Problem Windows Defender Update

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