Microsoft Security Essentials - Log indicates it keeps crashing


I started up my PC/Windows 7 64-bit tonight and since then Microsoft Security Essentials (MSE) seems to keep crashing. I uninstalled MSE then re-installed it, but still the same issue. Each time MSE stops/crashes I try to restart it, but still crashes.

Here are some of the logs from the Event Viewer:

Windows Error Reporting

Fault bucket , type 0
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: MsMpEng.exe
P3: 582a94a1
P4: mpengine.dll
P5: 1.1.15700.9
P6: 5c6dce74
P7: c0000005
P8: 0000000000391480

Attached files:

These files may be available here:

Analysis symbol:
Rechecking for solution: 0
Report Id: dd6bbbb8-4a1b-11e9-b437-04d3b04a8c7d
Report Status: 4

Application Error --------------------------------------------------------

Faulting application name: MsMpEng.exe, version:, time stamp: 0x582a94a1
Faulting module name: mpengine.dll, version: 1.1.15700.9, time stamp: 0x5c6dce74
Exception code: 0xc0000005
Fault offset: 0x0000000000391480
Faulting process id: 0x23cc
Faulting application start time: 0x01d4de283d068912
Faulting application path: c:\Program Files\Microsoft Security Client\MsMpEng.exe
Faulting module path: c:\ProgramData\Microsoft\Microsoft Antimalware\Definition Updates\{EC7E7EBD-47CB-4269-8649-AA7A50387BBE}\mpengine.dll
Report Id: a636b137-4a1b-11e9-b437-04d3b04a8c7d

Does anyone know how to resolve this? I used some info from these logs, but I haven't found anything as of yet.



asked on Super User Mar 19, 2019 by lordhog

2 Answers



"C:\Program Files\Microsoft Security Client\mpcmdrun.exe" -RemoveDefinitions

Provides temporary relief by rolling back the faulty definitions update. I still haven't worked out how to prevent it promptly reinstalling them though!

answered on Super User Mar 19, 2019 by BlueCompute

Had same situation here but Update Defs as of 21:00 - seems to have cured the issue

answered on Super User Mar 19, 2019 by Mike Spragg

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