Windows Defender service crashing

John555444 21 Reputation points
2021-05-27T07:51:48.67+00:00

Hi,

I have noticed that the windows defender service seems to be crashing on machines running Windows 10 1909 since around april....

Seems to coincide with the updates.

Does anyone have a fix or is this a known issue?

Errors:

The Windows Defender Antivirus Service service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 100 milliseconds: Run the configured recovery program.

Faulting application name: MsMpEng.exe, version: 4.18.1911.3, time stamp: 0x2c9b5e9d
Faulting module name: mprtp.dll, version: 4.18.1911.3, time stamp: 0xf2142587

Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
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  1. Kapil Arya 7,596 Reputation points MVP
    2021-05-27T10:30:38.087+00:00

    Hello,

    Suggest you to run System File Checker scan:

    1. Search for 'command prompt' using Cortana or Windows Search.
    2. From results, right click on Command Prompt and select Run as administrator.
    3. Type sfc /scannow command and press Enter key.
    4. Let the command complete and then reboot the machine.

    If that doesn't works, try these steps:

    1. Search for 'windows powershell' using Cortana or Windows Search.
    2. From results, choose Windows PowerShell and select Run as administrator.
    3. Then type/paste following and press Enter key:

    Repair-WindowsImage -Online -RestoreHealth

    Let the command complete, restart your system then.

    Let us know if this helps!

    1 person found this answer helpful.
  2. John555444 21 Reputation points
    2021-05-27T14:15:26.61+00:00

    All passed with nothing wrong...

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  3. Teemo Tang 11,336 Reputation points
    2021-05-28T02:01:36.273+00:00

    Try to in-place upgrade to repair system files issue.
    Download Windows Update Assistant from here and follow the guide, after upgrade complete, Windows Defender should be fine.
    https://www.microsoft.com/en-au/software-download/windows10

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  4. John555444 21 Reputation points
    2021-05-28T10:11:20.113+00:00

    I can't just do an in place upgrade.... I have hundreds of computers all suddenly doing the same since april.... Nothing changed on the machines.

    Perhaps there is an issue in the defender updates for machines running 1909...

  5. Andrew Ding 1 Reputation point
    2021-08-25T21:30:29.827+00:00

    same issue here, My outlook 365 keep crashing when this error happens.

    Faulting application name: MsMpEng.exe, version: 4.18.1911.3, time stamp: 0x2c9b5e9d
    Faulting module name: mprtp.dll, version: 4.18.1911.3, time stamp: 0xf2142587
    Exception code: 0xc0000409
    Fault offset: 0x00000000000842ed
    Faulting process id: 0x7370
    Faulting application start time: 0x01d793867bec5b33
    Faulting application path: C:\ProgramData\Microsoft\Windows Defender\platform\4.18.1911.3-0\MsMpEng.exe
    Faulting module path: C:\ProgramData\Microsoft\Windows Defender\platform\4.18.1911.3-0\mprtp.dll
    Report Id: 1aae46db-f6d5-4a0f-98b5-ca7d295729bb
    Faulting package full name:
    Faulting package-relative application ID:

    anyone find the issues?

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