My installation of Outlook 2016 always crashes upon startup. Always. I tried an upgrade from 2013 as well as a fresh install. I even tried completely reformating my Windown 7 x64 machine and installing Outlook 2016 all over again. But, I always receive the same error.

These are the problem details:

Problem signature:
  Problem Event Name:   APPCRASH
  Application Name: OUTLOOK.EXE
  Application Version:  16.0.4266.1003
  Application Timestamp:    55ceb248
  Fault Module Name:    AppVIsvSubsystems32.dll
  Fault Module Version: 5.0.10331.0
  Fault Module Timestamp:   55843043
  Exception Code:   c0000005
  Exception Offset: 0008a0ac
  OS Version:   6.1.7601.
  Locale ID:    1033
Additional information about the problem:
  LCID: 1033
  skulcid:  1033
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I tried reading up on the dll file which is a fault module and ALL lead to the same answer that it is related to Microsoft Virtualization engine error and whatever they suggest, nothing is helping out.

  • Have you tried disabling hardware acceleration for office apps ?
    – clhy
    Sep 25, 2015 at 10:52
  • 1
    report it to Microsoft support. this is an access violation (en.wikipedia.org/wiki/Segmentation_fault) in the Microsoft App-V components. Sep 25, 2015 at 15:38
  • 2
    Having the same problem. All the other apps are fine. But Outlook crashes each time.. no matter how I try to start it.
    – Lee Fuller
    Sep 29, 2015 at 19:19
  • What kind of CPU do you have?
    – QMord
    Oct 3, 2015 at 21:20
  • 1
    THE SOLUTION: Disable McAfee Host IPS in Quick Settings or add an exception for Outlook.exe in McAfee. Source: answers.microsoft.com/en-us/office/forum/office_2016-outlook/… (I don't have enough reputation to officially answer the question)
    – Paito
    Oct 11, 2015 at 14:58

2 Answers 2


THE SOLUTION: Disable McAfee Host IPS in Quick Settings or add an exception for Outlook.exe in McAfee. Source: http://answers.microsoft.com/en-us/office/forum/office_2016-outlook/outlook-2016-crashes-when-launch/a4a9ed10-ce64-48c2-ba50-bf785e7b9758?page=2

This definitely worked for me.


I have a similar issue - however, safe mode works for me.

The hardware acceleration seems not to have to do with anything.

Outlook 2016 (and the rest of the office 2016 suite via Office 365) worked well for me until the latest updates installed.


Description Faulting application name: OUTLOOK.EXE, version: 16.0.4229.1024, time stamp: 0x55f00f16 Faulting module name: mso99Lwin32client.dll, version:, time stamp: 0x55f01137 Exception code: 0xc0000005 Fault offset: 0x000000000040adac Faulting process id: 0x177c Faulting application start time: 0x01d0fec1a114c05c Faulting application path: C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE Faulting module path: C:\Program Files\Common Files\Microsoft Shared\Office16\mso99Lwin32client.dll Report Id: dc31ef7a-6ac9-11e5-831e-ed6dbe86aa07 Faulting package full name: Faulting package-relative application ID:

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