The built-in search will display the message below FixTechGuide email error solutions 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 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.
• As active members in the IT community, we work to support our clients’ businesses and provide them with peace of mind.
• 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.

Please install the Windows 10 Fall Creators Update to fix this issue. Outlook 2016 freezes when you try to preview an Excel file that's attached to an email. For more information about when builds are available for their respective channels, go to Update history for Microsoft 365.

Get Expert Help from TrustedTech

This tool has helped IT teams across healthcare, finance, education amongst many others. Whether it’s restoring email from encrypted backups or recovering badly broken PSTs, Stellar gets the job done with minimal fuss. You don't have permission to create an entry in this folder. Right-click the folder, and then click Properties to check your permissions for the folder. See the folder owner or your administrator to change your permissions. Currently, you can't use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you've reconnected your Outlook.com account to Outlook.

Outlook Known issues in April 2023 updates

Microsoft Outlook is one of the best-known business-class email clients from Microsoft. It is a feature-rich application that allows users to manage multiple email accounts, calendars, contacts, and tasks. Outlook also offers several advanced features, like email tracking, read receipts, and email templates, making it a powerful tool for managing email-based workflows.

Outlook Known Issues in November 2021 updates

As it mostly happens due to damaged Outlook files in this situation, you need to opt Exchange connectivity diagnostic for the BitRecover PST Repair Tool as this software can easily handle individual or batch Outlook files. This software is also reliable to restore and convert damaged, corrupted, and oversize Outlook files. Your antivirus software can also cause issues with Outlook connectivity. Some antivirus software may block Outlook from connecting to the internet.



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 Office 365 sync problems and login fixes 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.