Windows 10: Windows Defender will not allow installation

Discus and support Windows Defender will not allow installation in AntiVirus, Firewalls and System Security to solve the problem; I have Ant Video Downloader for Firefox and it complained about needed to upgrade the Native Application, so I downloaded it, as I have before, and a... Discussion in 'AntiVirus, Firewalls and System Security' started by rosawoodsii, Mar 22, 2020.

  1. Windows Defender will not allow installation


    I have Ant Video Downloader for Firefox and it complained about needed to upgrade the Native Application, so I downloaded it, as I have before, and a window popped up and said Windows Defender Smartscreen blocked it. After spending half an hour finding a way to get gpedit.msc on my computer (Windows 10 Home) from a download, I changed the policy setting and turned off Windows Defender. However, even though the settings say that Windows Defender Antivirus is turned off, I still get a popup window when I try to install the Ant update. I also turned off the anti-malware protection, but still can't install the update.

    i have Windows 10 Home, version 1903, OS build 18362.720
    Any ideas or solutions for me?

    :)
     
    rosawoodsii, Mar 22, 2020
    #1

  2. windows xp installation and dual core am

    could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx
     
    exodusprime1337, Mar 22, 2020
    #2
  3. Windows defender does not allow for me to unquarantine items

    Hi Michael,

    The Real-time protection feature of Windows
    Defender stops malware from running on your device. It's possible that this feature is preventing the system from restoring/allowing the affected program. If you're sure that the affected program is virus free, we suggest that you disable the
    feature temporarily and try to restore the program. To do this, follow the steps below:

    • Type Windows Defender settings in the search bar and press
      Enter.
    • Under Windows Defender, disable
      Real-time protection by clicking the toggle button.
    • Once you're done, restore the affected file/program and check if the issue persists.

    Also, you can allow a quarantined file/program from the Windows
    Defender desktop app. If you have the app installed on your device, you can follow these steps:

    • Type Windows Defender in the search box, and then select the Desktop app.
    • Under the History tab, click on the check box for the affected file/program.
    • Select Allow item.

    We'll appreciate if you can send us an update.
     
    Darwin Dim, Mar 22, 2020
    #3
  4. Try3 Win User

    Windows Defender will not allow installation

    Windows defender false positive - forced to allow threat

    Windows defender has started to identify C:\Windows\System32\mshta.exe as a threat [normally reported as a Trojan Powessere.G]. I use mshta.exe to run an hta custom MsgBox - I have been hoping to keep using my current CustomMsgBox tool [batch file calling a vbs-hta file] until later this year when I hope to have had enough time to replace it with a PowerShell alternative.

    Windows defender's notification lets me "allow the threat" but that seems to me to be a bigger security hole than is necessary - it will now ignore a potentially real intrusion when all I want to run is a genuine Windows component. My immediate problem is fixed but I would prefer to fix the false positive using the exclusions list.

    I cleared the 'Allowed threats history' so I could use the exclusions list instead. I added C:\Windows\System32\mshta.exe to the file exclusions list and I checked that it had taken properly by checking the exclusions list both in the UI & in the Registry. But the exclusion made no difference, it continued to detect and block the exe.

    I have repeated the attempt several times [by clearing the allowed threats list & exclusions list beforehand] and the results are the same every time
    - allowing the threat works,
    - using the exclusions list has no effect.

    I studied the relevant tutorial but have not spotted an error in what I have been doing - Add or Remove Windows Defender Exclusions

    Does anybody with experience of using the exclusions list to counter false positives have any suggestions for me?

    Denis
     
Thema:

Windows Defender will not allow installation

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