The built-in search will display the message below disable faulty add-ins in Outlook to indicate it is not using the Windows Search service. The issues documented in this section have been reported after installing the recent updates listed below. We're investigating the issues and will update this page when a fix is available. In the meantime, please use the workarounds suggested for each issue. If you typically use an Outlook.com account for email, this issue can occur if there are multiple aliases on the account and the 3rd party email address is the primary alias.

Troubleshooting Co-Authoring and Collaboration Errors

• This occurs because custom form script is now disabled by default.
• When they get too large, go corrupt, or are poorly configured, things start to break.
• Let’s look at what causes Outlook to crash, how you can fix it, and a smarter tool that takes a lot of the stress off your plate.
• The issues documented in this section have been reported after installing the recent updates listed below.
• Our licensing engineers can help triage complex problems and ensure you're on the right support path.
• Your antivirus software can also cause issues with Outlook connectivity.
• Corrupted or badly set-up Outlook profiles can often cause start-up problems.
• Microsoft Outlook is one of the best-known business-class email clients from Microsoft.

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

Faulty hard drives or disk errors can corrupt the Outlook data stored locally. This creates crashes that seem random—until you dig into the hardware logs. If you are an Outlook user and encountering connectivity problems with Microsoft 365 mailbox, the steps above may correct the problem. Otherwise, the probably culprit is a damaged OST file. Use the Stellar Converter for OST to extract mail items from the backup (orphaned) OST file. Discover how IT leaders can address key Microsoft Copilot questions on cost, deployment, security, and integration to maximize ROI and adoption.

Outlook Known Issues in November 2021 updates

Users often turn to Microsoft’s ScanPST tool, but it struggles with large files and doesn’t always finish connection status shows disconnected the job. For issues that are not covered on this page, we have multiple tools to help you automatically diagnose and fix a range of Outlook problems. To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. Read how to Add your Outlook.com account to another mail app.



We're working to make it possible to edit shared calendars in Outlook 2016 for Windows. Not Implemented Error mostly appears in Outlook 2010, 2013, 2016, 2019 and latest Microsoft 365 version. Boost your SMB’s security and compliance with Microsoft 365 Business Premium. Discover Defender and Purview add-ons for enterprise-grade protection at SMB-friendly pricing. In these cases, direct escalation to Microsoft or working with a Microsoft CSP partner, such as rebuild Outlook data file quickly TrustedTech, can expedite resolution and minimize downtime. Our licensing engineers can help triage complex problems and ensure you're on the right support path.