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Troubleshooting Co-Authoring and Collaboration Errors

• This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated.
• This post also mentions the downgrade to an earlier Microsoft 365 build, which was previously described as a workaround.
• Sometimes, issues can be caused due to a corrupt Outlook OST file.
• Outlook slows down, crashes randomly, or fails to load entirely.
• The loading of unregistered MAPI services has been disabled by default to make Outlook more secure.
• As active members in the IT community, we work to support our clients’ businesses and provide them with peace of mind.
• When this registry key is set, Outlook will use its own built-in search engine.

It seems like something went wrong on Microsoft update and they might recall it or fix it, so we might need to wait untill that. On January 16, 2025, an update for Microsoft 365 Apps will be released in the Current Channel, as can be seen from the entry MC in the Microsoft 365 Message Center. TrustedTech is a Microsoft solutions Partner in the following areas.

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However, sometimes, it can experience connectivity issues, especially when using a Microsoft 365 account. Let’s see how to fix Outlook connection problems in Microsoft 365 accounts. The file react-native-win32.dll was reported as not found in the specified path, even though the file exists. Robert suspected that it might be related to an Edge update, and replacing the .dll with an older version or downgrading Microsoft 365 to an older build fixed the problem. I had picked up on this in the blog post Microsoft Outlook 365 or other MS 365 apps are dropping suddenly errors.

Outlook Known issues in April 2023 updates

After installing the September Public Update, Outlook 2007 displays mixed languages in the user interface.

Outlook Known Issues in November 2021 updates

Corrupted or badly set-up Outlook profiles can often repair PST file without data loss cause start-up problems. The app might refuse to launch or crash at the splash screen. Outlook slows down, crashes randomly, or fails to load entirely.



Real-time collaboration is at the core of Microsoft 365; however, issues can arise due to permissions, software version conflicts, or connectivity problems. While M365 is highly stable, it’s not immune to occasional disruptions. Most of these crashes come down to one thing – problematic data files. When they Outlook OST vs PST repair get too large, go corrupt, or are poorly configured, things start to break. Please install the latest updates on your phone to resolve the issue. Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite.