Turn On or Off Tamper Protection for Windows Defender Antivirus  

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    Turn On or Off Tamper Protection for Windows Defender Antivirus

    Turn On or Off Tamper Protection for Windows Defender Antivirus

    How to Turn On or Off Tamper Protection for Windows Defender Antivirus in Windows 10
    Published by Category: Security System
    23 Oct 2019
    Designer Media Ltd


    How to Turn On or Off Tamper Protection for Windows Defender Antivirus in Windows 10


    Starting with Windows 10 build 18305, Microsoft introduced Tamper Protection.

    Tamper Protection is a new setting from Windows Defender Antivirus, available in the Windows Security app, which when on, provides additional protections against changes to key security features, including limiting changes which are not made directly through the Windows Security app.

    Starting with Windows 10 build 18323, you may see a new recommendation in the Windows Security app suggesting you turn this setting on if currently turned off.

    See also:

    This tutorial will show you how to turn on or off Tamper Protection for key Windows Defender Antivirus security features in Windows 10.

    You must be signed in as an administrator to turn on or off Tamper Protection.





    Here's How:

    1 Open Windows Security, and click/tap on the Virus & threat protection icon. (see screenshot below)

    Turn On or Off Tamper Protection for Windows Defender Antivirus-windows_security_tamper_protection-1.jpg

    2 Click/tap on the Manage settings link under Virus & threat protection settings. (see screenshot below)

    Turn On or Off Tamper Protection for Windows Defender Antivirus-windows_security_tamper_protection-2.png

    3 Turn on (default) or off Tamper Protection for what you want. (see screenshot below)

    The registry key and DWORD value for this setting is located below, but you will not be able to manually change the TamperProtection DWORD value unless you take ownership of the Features key first.

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender\Features

    TamperProtection DWORD

    0 = Off
    5 = On


    Turn On or Off Tamper Protection for Windows Defender Antivirus-windows_security_tamper_protection-3.jpg

    4 When prompted by UAC, click/tap on Yes to approve.

    5 You can now close Windows Security if you like.


    That's it,
    Shawn

  1. techquest's Avatar
    Posts : 1,602
    W10 Enterprise
       #1

    Has this facility now been turned off as I can't find it, running 18362. The other issues is that no matter how I try I can't run WD Offline Scan.

    Got a little jumpy today having got a Virus warning after downloading netbeans IDE from the official apache site, Scanned it, did a hash check , both reported as ok and then getting a WD warning which had picked up, an thankfully quarantined, a trojan by the name of unwaders.A!ml virus.

    Turn On or Off Tamper Protection for Windows Defender Antivirus-virus-threat-180519.png

    So I decide to try a WD offline scan but ran into the issue of it not working. Anyone with any ideas as to why this would not be working?

    Also I have no idea what "Monegafeb.exe" detailed in the first line of "Affected items" is. Can't find anything in an online search either.

    The path "C:\Users\Tech1\AppData\Local\2d18139fc92404b986600c472cb5043a" is still in the hidden files but the Monegafeb.exe is not as it was, I assume quarantined by WD.

    Should the folder "2d18139fc92404b986600c472cb5043a" be there or do I get rid of it? There are 2 text documents in it, pacepotaro and sof.
      My Computer

  2. Brink's Avatar
    Posts : 48,685
    64-bit Windows 10 Pro for Workstations build 19631
    Thread Starter
       #2

    Hellp @techquest,

    Do you have the settings available in Settings like in the tutorial?

    If not, do you have a 3rd party AV installed?
      My Computers

  3. techquest's Avatar
    Posts : 1,602
    W10 Enterprise
       #3

    Hi Brink thanks for your input.

    Yes I see all that you have in the tut and have all on down to the Tamper on slide. But no matter what I try, the offline scan does not run. I have no third party protection on the system.
      My Computer

  4. Brink's Avatar
    Posts : 48,685
    64-bit Windows 10 Pro for Workstations build 19631
    Thread Starter
       #4

    If you haven't already, you might see if you may be able to use one of the other options to perform a Windows Defender offline scan.

    Windows Defender Offline Scan in Windows 10
      My Computers

  5. techquest's Avatar
    Posts : 1,602
    W10 Enterprise
       #5

    Thanks, yes I have tried all 3 options.

    Opt ONE (PS). C:\Windows\system32> Start-MpWDOScan
    C:\Windows\system32> just sits at this promt.

    Opt TWO (CMD). PS C:\Windows\system32> PowerShell Start-MpWDOScan
    PS C:\Windows\system32> just sits at this prompt


    Opt THREE. Get to point 5. and Yes to UAC but doesn't get 6. or beyond.
      My Computer

  6. Brink's Avatar
    Posts : 48,685
    64-bit Windows 10 Pro for Workstations build 19631
    Thread Starter
       #6

    Interesting. Are you able to run the offline scan if Tamper Protection is turned off? If so, could be a bug.
      My Computers


  7. techquest's Avatar
    Posts : 1,602
    W10 Enterprise
       #7

    Just tried your suggestion with Tamper Protection off but still the same trying all 3 options of # your2. As you say, interesting. Should I report this through the hub as a potential bug, do you think?
      My Computer

  8. Brink's Avatar
    Posts : 48,685
    64-bit Windows 10 Pro for Workstations build 19631
    Thread Starter
       #8

    Yeah, I would recommend to report it to be safe.
      My Computers

  9. techquest's Avatar
    Posts : 1,602
    W10 Enterprise
       #9

    Okay Brink, thanks for your input and help, they are much appreciated.

    Meanwhile I will flag it to the insider hub and see what they come back with, if they do at all that is, and post back here if there is any result.
      My Computer


 
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