Windows 10: Windows Defender real time protection service didn't open

Discus and support Windows Defender real time protection service didn't open in AntiVirus, Firewalls and System Security to solve the problem; [ATTACH] can i run back my real time protection and keep my windows safely?please unblocked my program from your group policy... Discussion in 'AntiVirus, Firewalls and System Security' started by TharushaNirod, Jun 2, 2019.

  1. Windows Defender real time protection service didn't open


    Windows Defender real time protection  service didn't open fae807ce-4055-473f-bcb4-9b0dc635f10c?upload=true.png can i run back my real time protection and keep my windows safely?please unblocked my program from your group policy

    :)
     
    TharushaNirod, Jun 2, 2019
    #1
  2. adonis08 Win User

    Windows Defender Real Time Protection

    I did all the step and delete the MsMpEng.exe but still it doesn't turn on Real Time Protection any suggestion please??
     
    adonis08, Jun 2, 2019
    #2
  3. Windows Defender Real Time Protection Service slowing down file access

    I noticed after a recent Windows 10 update that Windows Defender's real-time protection
    dramatically slows file system access.

    I timed how long it took to build a (Delphi XE6) project with Windows Defender's real-time protection off and on in order to get a sense of how bad it is.


    Windows Defender real time protection  service didn't open 4faf6467-088e-4569-87d4-259624a4dc91.png


    I did nothing but alternate between real-time protection off and on (no reboots required, physical hardware):

    Trial
    Real-time protection status
    Build time (s)

    1
    On
    86.4 s

    2
    Off
    4.0 s

    3
    On
    84.0 s

    4
    Off
    4.0 s

    5
    On
    86.9 s

    6
    Off
    4.1 s

    7
    On
    87.4 s

    8
    Off
    3.9 s

    Which means:

    • Build time with real-time protection off: 4.0 s (sd: 0.082 s)
    • Build time with real-time protection on: 86.2 s (sd: 1.51 s)


    Windows Defender real time protection  service didn't open 463c8028-6809-4b99-b8c5-79c4aa4126b5.png


    This means that Windows Defender in Windows 10 has now entered the realm of other crappy anti-virus products - that are a detriment to the user's PC rather than a benefit.

    • Of course i'm not going to wipe my PC and reinstall everything.
    • Of course there is no other anti-virus software installed.
    • Of course i made no changes to this PC prior to this happening.
    • Of course this is not a virtual machine.
    • It spontaneously started Wednesday October 19.
    • I have no idea what could have happened to my PC between 5pm on October 18th, and 9am on October 19th:

    Windows Defender real time protection  service didn't open e9b5b2d7-93db-4792-ad78-025aa381d5b3.png


    No idea whatsoever.

    Without disabling Windows Defender Real-time protection, how do I make Windows Defender not perform file-scans before an application attempts to open a file? That is: how do i make Microsoft's own anti-virus software as fast at it used to be in Windows Vista,
    Windows 7, Windows 8, Windows 8.1, and Windows 10 before a recent update?

    Bonus Reading

    This question has of course already been asked, and ignored, on these forums.


    ***Post moved by the moderator to the appropriate forum category.***
     
    JackTripper, Jun 2, 2019
    #3
  4. Windows Defender real time protection service didn't open

    Windows Defender Real-time protection

    Thankfully we can enforce Defender’s Group Policy settings without using the Group Policy Editor, and without merging a downloaded REG file
    – and the alternative is amazingly quick and easy. I’m going to recommend against disabling Defender with the DisableAntiSpyware DWORD, because I’m seeing some really bizarre behavior when I use a REG command for this in Version 1709.
    On the other hand, there doesn’t seem to be any problem at all with turning Defender’s real-time protection on or off with these REG commands:

    Click on the Start button and select Windows Powershell (Admin) and then copy, paste, and enter the command:

    Turn off Windows Defender’s real-time protection:

    REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection" /v DisableRealtimeMonitoring /t REG_DWORD /d 1 /f

    Turn on Windows Defender’s real-time protection:

    REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection" /v DisableRealtimeMonitoring
     
    GreginMich, Jun 2, 2019
    #4
Thema:

Windows Defender real time protection service didn't open

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