Windows 10: Unable to update Windows Defender Anti-Virus on Windows 10

Discus and support Unable to update Windows Defender Anti-Virus on Windows 10 in Windows 10 Installation and Upgrade to solve the problem; I had to recover Windows 10 on my HP15 Notebook PC several days ago. Since the recovery, Windows Defender Anti Virus will not update. I have tried... Discussion in 'Windows 10 Installation and Upgrade' started by rhmc430, Dec 1, 2018.

  1. RHMC430
    rhmc430 Win User

    Unable to update Windows Defender Anti-Virus on Windows 10


    I had to recover Windows 10 on my HP15 Notebook PC several days ago. Since the recovery, Windows Defender Anti Virus will not update. I have tried numerous fixes but still not able to update. Has Anyone else had this problem? Any Suggestions?

    :)
     
    rhmc430, Dec 1, 2018
    #1
  2. FLOGGER23M
    Flogger23m Win User

    Windows 10 Defender - How to make it default to task bar?

    Using Windows 10 and currently I am using Defender for anti virus. For whatever reason Windows Defender does not show up in the task bar unless I search for the program or right click and scan a file/folder. Is there a way to force Defender to show up in the task bar at start up?
     
    Flogger23m, Dec 1, 2018
    #2
  3. JSFITZ54
    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, Dec 1, 2018
    #3
  4. QUIETMAN7 - MVP
    quietman7 - MVP Win User

    Unable to update Windows Defender Anti-Virus on Windows 10

    Anti Virus Problems

    You should not be using more than one anti-vrus program on your computer. Read the
    IMPORTANT NOTE about not using more than one anti-virus program in this

    topic    .

    The inability to turn on Windows Defender 8/10 is typically the result of having a third-party anti-virus installed or failure to remove it properly (completely). Since Windows 8/10 Defender includes anti-virus protection, it is
    disabled during the installation of another anti-virus program. If a trial anti-virus (i.e. McAfee, Norton, etc) came
    preinstalled on your computer or you installed one, Windows Defender will be turned off (disabled). Windows Defender recognizes the install and automatically disables itself when other anti-virus products are used
    to avoid conflicts. Windows Defender will remain disabled until that anti-virus software has been completely uninstalled. In some cases, you may need to download and run the anti-virus vendor's clean up tool to remove any remaining
    remnants.


    After removal of the third party anti-virus, Windows 8/10 Defender needs to be
    activated     if you choose to use it. When uninstalling the third-party anti-virus Defender should automatically turn itself on but sometimes you may receive a message indicating
    your system has no protection...click here to turn on Windows Defender. If not, and Defender remains disabled, you will need to manually turn it on.

     
    quietman7 - MVP, Dec 1, 2018
    #4
Thema:

Unable to update Windows Defender Anti-Virus on Windows 10

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