Has anyone found the fix for the Outlook for Mac calendar crash issue?

The crash is occurring inside the Outlook calendar UI module (OlkCalendarUIKit) and is being reported through Microsoft Error Reporting (merp). There is no calendar‑specific fix in the provided context for version 16.109, but there are known Outlook for Mac calendar crashes that have been fixed in later builds. The supported actions are:

1. Update Outlook for Mac to the latest build
   Multiple calendar‑related crashes have been fixed in newer versions. For example:
   • A calendar crash on launch and when clicking the Calendar module was fixed in later Beta builds.
   • Other calendar issues (shared calendars, all‑day events, calendar image crashes) are also fixed in recent 16.90–16.91 builds.
     Use Microsoft AutoUpdate on macOS and update Outlook to the newest available version. If already on Beta/Insider, ensure the very latest build is installed.
2. If Outlook crashes on startup or during sync, ensure not running an older affected build
   Earlier Outlook for Mac builds had a crash when a calendar event had a NULL OriginalStart property; this was fixed starting with version 16.47. If using any older or frozen build (for example via an unmanaged install), update to at least 16.47 or, preferably, the newest 16.9x build.
3. If Microsoft Error Reporting itself is misbehaving
   If repeated MERP (Microsoft Error Reporting) issues or update failures are seen:
   • Open Microsoft AutoUpdater, right‑click the icon next to “Microsoft Error Reporting 2.2” and choose Show in Finder.
   • This opens /Library/Application Support/Microsoft/MERP2.0. Delete the MERP2.0 folder.
   • Or navigate manually in Finder to Macintosh HD → Library → Application Support → Microsoft and delete MERP2.0.
     Then rerun AutoUpdate and install all available Office/Outlook updates.
4. If Office apps in general are unstable after an OS or app update
   If Outlook and other Office apps are quitting unexpectedly:
   • Quit all Office apps.
   • In Finder → Applications, Command‑click all Microsoft 365 apps and move them to Trash.
   • In Finder, use Go → Go to Folder… and open ~/Library/Containers/.
   • Delete the folders starting with:
     • com.microsoft.Outlook
     • (and, if affected, com.microsoft.Word, com.microsoft.Excel, com.microsoft.Powerpoint, com.microsoft.OneNote).
   • In ~/Library/Group Containers/, move to Trash:
     • UBF8T346G9.ms
     • UBF8T346G9.Office
   • Reinstall Office/Outlook from the Microsoft account subscriptions page and sign in again.
5. If the crash persists even on the latest build
   Given the crash is in the calendar UI, after updating and reinstalling as above, collect a fresh crash report and open a support case with Microsoft so the Outlook for Mac team can analyze the specific 16.109 calendar crash.

References:

• Outlook for Mac crashes unexpectedly on startup or during mail synchronization
• Fixes or workarounds for recent issues in Outlook for Mac
• Outlook for Mac - Release notes for Beta Channel builds
• Get rid of Microsoft Error reporting 2.2 on Mac - Microsoft Q&A
• Microsoft Office apps for Mac quit unexpectedly - Microsoft Q&A
• 365 apps crash - Microsoft Q&A