How to Fix New Outlook Crashing When Expanding Calendars?

The New Outlook app, a sleek update to the classic desktop version, is built to handle multiple accounts and shared calendars with ease. But when you click “Show All” to view every calendar linked to your accounts, it sometimes leads to a crash.

A few of the reasons why Outlook Crashes during Show all could be:

• Multiple Account Overload
• Shared Calendar Synchronization Errors
• Corrupted Cache
• Software Updates

How to Resolve the New Outlook Crash When Clicking on “Show All” on Calendars?

Resolving the Outlook crash is achievable through systematic troubleshooting. The following steps are designed to restore functionality. If you are managing critical work systems, then consult Microsoft Support or your IT department as a contingency.

Step 1: Cease Using “Show All”

Refrain from repeatedly selecting “Show All” to prevent exacerbating data corruption. Close the calendar view and proceed to alternative methods.

NOTE: Continuous attempts may overwrite cache data, complicating recovery efforts.

Step 2: Implement a Workaround to Access Calendars

Use an alternative method to view calendars without triggering a crash.

• Locate the account containing the desired calendars in the calendar pane.
• Click the three-dot menu adjacent to the account name.
• Select “Show More Calendars” to expand the calendar list.

This method may bypass the crash, providing temporary access to calendars.

Step 3: Revert to Classic Outlook

Temporarily switch to the classic Outlook application, which employs a different synchronization mechanism. If successful, use classic Outlook as an interim solution while addressing New Outlook issues.

• Open a New Outlook.
• Navigate to the “View” tab or settings menu.

• Toggle off the “New Outlook” option to revert to the classic version.
• Restart Outlook.
• Test the “Show All” function in the calendar view.

Step 4: Remove and Re-Add Accounts

Isolate and reset problematic accounts to resolve synchronization errors. This resets synchronization for the account, potentially eliminating crash triggers.

• Open Account settings: Open New Outlook and navigate to File > Account Settings > Account Settings.

• Remove the suspected Account: Select the suspected account (e.g., Gmail or secondary Office 365) and click Remove.

• Test: Restart Outlook and test the “Show All” function with only the primary account.
• Re-add the account: If stable, re-add the removed account via File > Add Account, ensuring correct credentials and protocol (IMAP or Exchange for Gmail, not POP).

Step 5: Clear the Outlook Cache

Remove corrupted cache data to restore proper functionality. A cleared cache provides a clean slate, often resolving sync-related crashes.

• Close the Application: Close New Outlook completely.
• Run the command: Press Windows + R, enter %localappdata%\Microsoft\Outlook, and press Enter.

• Delete the cache: Delete all cache files within the folder (Outlook will regenerate these upon restart).
• Restart the Application: Restart Outlook and test the calendar view.

Step 6: Update or Reinstall New Outlook

Ensure the application is current or reinstall it to eliminate bugs. Updates or reinstallation may address issues introduced by recent patches.

Updating:

• Open Outlook and navigate to File > Office Account > Update Options.
• Select “Update Now” and install any available updates.

• Restart Outlook and test the calendar.

Reinstallation:

• Open Control Panel > Uninstall a Program.

• Uninstall Microsoft 365 or Outlook.
• Reinstall from the Microsoft Store or Office 365 portal.
• Reconfigure accounts and test the calendar.

Step 7: Inspect for Corrupted Calendar Entries

Identify and remove problematic calendar entries. Removing corrupted entries can stabilize calendar loading.

• Access calendars via Outlook Web App (OWA) at outlook.office.com, which is less prone to crashing.
• Review calendars for irregular entries (e.g., recurring events with invalid dates).
• Delete or edit suspicious entries.
• Return to New Outlook and test the “Show All” function.
• Advanced Option: Administrators may use the Microsoft Calendar Checking Tool (CalCheck) to scan for corrupted entries, following Microsoft’s documentation.

Also Read: Outlook Crashes When Opening Calendar Appointments

Preventive Measures for Future Stability

To safeguard against future crashes, adopt these practices:

• Minimize Shared Calendars: Restrict the number of shared calendars to reduce synchronization demands.
• Maintain Updates: Regularly update Outlook and your operating system to mitigate bugs.
• Backup Calendar Data: Periodically export calendars to a PST file:
  • Navigate to File > Open & Export > Import/Export.

• Select “Export to a file,” choose “Outlook Data File (.pst),” and include calendars.

• Save the file to a secure location.

Addressing Specific Scenarios

Multiple Office 365 Accounts:

Disable “Download Shared Folders” to lighten sync load.

• Go to File > Account Settings > Account Settings.
• Select the account, click “Change,” and access “Advanced” settings.
• Uncheck “Download Shared Folders.”
• Restart Outlook and test.

Gmail Accounts:

Verify correct protocol usage.

• Ensure Gmail is configured as IMAP or Exchange in File > Add Account, avoiding POP.

Shared Calendars:

Validate permissions or re-share problematic calendars.

• Request the calendar owner to review permissions or re-invite you to the calendar.

Conclusion

This guide provides comprehensive solutions for addressing New Outlook crashes when selecting “Show All” on calendars. By following the outlined steps, you can restore functionality with confidence. If issues persist, Microsoft Support or your IT team can offer further assistance.

Frequently Asked Questions