Introduction

The release of Windows 11 version 24H2 has introduced a compatibility issue affecting users who integrate Google Workspace with Microsoft Outlook via the Google Workspace Sync for Microsoft Outlook (GWSMO) tool. This problem prevents Outlook from launching, disrupting daily operations for many professionals.

Background on GWSMO

GWSMO is a synchronization tool that enables users to manage their Google Workspace emails, calendar events, contacts, notes, and tasks directly within Microsoft Outlook. This integration is crucial for users who prefer Outlook's interface while relying on Google's suite of productivity tools.

The Compatibility Issue

After upgrading to Windows 11 version 24H2, users have reported that Outlook fails to start when GWSMO is installed. The error message displayed is:

"Cannot Start Microsoft Outlook. Cannot Open the Outlook Window. The set of folders cannot be opened. An unexpected error has occurred. MAPI was unable to load the information service."

Additionally, affected users are unable to uninstall or reinstall GWSMO, complicating troubleshooting efforts. (learn.microsoft.com)

Microsoft's Response

To prevent further issues, Microsoft has implemented a compatibility hold on devices using outdated versions of GWSMO. This hold blocks the Windows 11 24H2 update on such devices until the compatibility issue is resolved. (bleepingcomputer.com)

Resolution Steps

The issue has been addressed in GWSMO version 4.3.68.0, released on November 22, 2024. Users are advised to update to this version before upgrading to Windows 11 24H2. The updated version can be downloaded from Google's official page. (tools.google.com)

Steps to Update GWSMO:
  1. Download the latest version of GWSMO from Google's official download page.
  2. Run the installer and follow the on-screen instructions to complete the update.
  3. After updating, attempt to launch Outlook to ensure the issue is resolved.

If the problem persists 48 hours after updating GWSMO, users should contact Google Workspace Support for further assistance. (learn.microsoft.com)

Implications and Best Practices

This incident underscores the importance of maintaining up-to-date software to ensure compatibility and functionality. Users are encouraged to regularly check for updates to both their operating system and critical applications. IT administrators should monitor compatibility advisories from software vendors to preemptively address potential issues.

Conclusion

While the compatibility issue between Windows 11 24H2 and GWSMO has caused disruptions, updating to the latest version of GWSMO provides a clear solution. Staying vigilant with software updates and being aware of compatibility holds can help mitigate similar issues in the future.