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Troubleshooting Co-Authoring and Collaboration Errors

• 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.
• For more information about when builds are available for their respective channels, go to Update history for Microsoft 365.
• Outlook slows down, crashes randomly, or fails to load entirely.
• 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.
• The loading of unregistered MAPI services has been disabled by default to make Outlook more secure.
• When this registry key is set, Outlook will use its own built-in search engine.
• If you manually type in the secondary connected account email address in the "From" field, the email is sent as "On behalf of" your primary Outlook.com account.

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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We're investigating the issue and will update this page when a fix is available. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine. 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. If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issue.

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 Fix Outlook and Office365 Sync Issues 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.



Now we know the causes of Implemented error in Outlook, so, let’s forward to know the solutions to fix it. Try these manual methods to restore Outlook functionality. A vast community of Microsoft Office365 users that recreate Outlook profile step by step are working together to support the product and others. The update for Microsoft 365 Apps will be rolled out gradually to users of this update channel from January 16, 2025 (PST). Microsoft Outlook crashes with the above build on Windows Terminal Server under Windows Server 2016 with the following error message. TrustedTech is dedicated to being a reliable resource for all software and technology support needs.