Outlook LTSC 2021 and 2024 crashes opening Viva Engage, Yammer, Power Automate, and other emails

Last Updated: January 13, 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:

Problem signature:

P1: OUTLOOK.EXE

P2: 16.0.14334.20440

P3: 0x692d86e9

P4: OUTLOOK.EXE

P5: 16.0.14334.20440

P6: 0x692d86e9

P7: c0000005

P8: 0x000000000050cc29

Problem signature:

P1: OUTLOOK.EXE

P2: 16.0.17932.20620

P3: 0x692f8916

P4: OUTLOOK.EXE

P5: 16.0.17932.20620

P6: 0x692f8916

P7: c0000005

P8: 0x0000000000c6033d

STATUS: INVESTIGATING

This issue has been escalated to the Outlook Team. We will update this topic as soon as we get any status to share.

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