Outlook for Mac 16.110 Strips Conversation History
Summary: After installing Outlook for Mac 16.110 (build 26061317), some users report that replies and forwards omit the original email thread. This breaks message context and can disrupt workflows. Below: who is affected, Microsoft’s guidance and current status, a safe downgrade to 16.109.3, and practical workarounds.
What changed in Outlook for Mac 16.110
Following the 16.110 update, some users see a blank compose/reply window where the original message used to appear. In other cases, forwarded messages arrive without the original thread. The issue was confirmed in a Microsoft Learn community thread by a Microsoft external staff moderator, who recommended reverting to a prior build until Microsoft issues a fix.
Who is affected
Any Mac running Outlook build 16.110 (26061317) may experience missing conversation history in replies or forwards. If your Mac is managed by an employer or IT department, consult them before making changes — corporate devices often require coordinated testing and deployment.
Microsoft’s guidance and current status
At the time of writing, Microsoft has not released a public patch. The Microsoft Learn thread recommends reverting to version 16.109.3 or earlier until a fix is available. No public timeline for a patch has been announced; monitor official Microsoft channels for updates.
Temporary fix — safely downgrade to Outlook 16.109.3
Only perform these steps if you are authorized to modify software on your device. If your Mac is corporate-managed, follow your IT policies and coordinate with support.
- Quit Outlook and completely remove the currently installed Outlook 16.110 from your Mac.
- Download and install Outlook version 16.109.3 (or the latest stable build prior to 16.110). See Microsoft’s Office for Mac update history for older builds and install guidance: Office for Mac update history.
- After installing the older build, disable automatic updates so Outlook doesn’t auto-upgrade to the broken build: open Outlook > Help > Check for Updates > uncheck “Automatically keep Microsoft apps up to date.”
- Monitor official Microsoft channels and re-enable automatic updates once Microsoft confirms a patched release.
Workarounds and precautions
- If you must keep 16.110 temporarily, manually copy the original text into your reply or attach the original message to preserve context.
- When forwarding, confirm the forwarded message contains the original content before sending — some users reported forwards missing the original thread.
- Coordinate with your IT department for managed Macs; IT may prefer testing and staged rollouts rather than individual downgrades.
- Keep monitoring Microsoft Learn, the Office update history page, and official Microsoft support channels for patch notices and updated guidance.
Sources and further reading
For additional coverage and the original community discussion, see:
- CNET: Microsoft Outlook Mac update deletes conversation history
- The Register: Outlook email threads removed in update
- Microsoft Learn: Community post about the bug
If you rely on Outlook for critical workflows, consider downgrading or contacting your IT support until Microsoft issues a fix. Bookmark this page and check official Microsoft channels for updates.