Outlook 2024 LTSC crashes opening Viva Engage, Yammer, Power Automate, and other emails

Last Updated: March 18, 2026

ISSUE

When you open emails sent from Viva Engage, Viva Insights, Yammer, or Power Automate, classic Outlook crashes.

The crash event from the Windows Event Viewer will have a similar signature:

Event 1000: Faulting application name: OUTLOOK.EXE, version: 16.0.17932.20700, time stamp: 0x69a299f1 Faulting module name: OUTLOOK.EXE, version: 16.0.17932.20700, time stamp: 0x69a299f1 Exception code: 0xc0000005 Fault offset: 0x0000000000c603cd Faulting process id: 0x3544 Faulting application start time: 0x1DCB0CBB88FCA9C Faulting application path: C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE Faulting module path: C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE

STATUS: INVESTIGATING

The Outlook Team is investigating a crash with the signature noted above for Outlook 2024 LTSC that was not addressed by the fixes on March 10, 2026. We will update this topic as soon as we get the fix release information.

The Outlook Team released fixes for the original crash in the March 10, 2026, public updates with the builds below.

Outlook 2021 LTSC - 14334.20560, Update history for Office LTSC 2021 and Office 2021 Outlook 2024 LTSC - 17932.20694, Update history for Office LTSC 2024 and Office 2024

The original crashes had event signatures similar to below:

The crash event from the Windows Event Viewer will have a similar signature.

Problem signature:

P1: OUTLOOK.EXE

P2: 16.0.14334.20440

P3: 0x692d86e9

P4: OUTLOOK.EXE

P5: 16.0.14334.20440

P6: 0x692d86e9

P7: c0000005