
Run the mailbox cleanup and compact tools for all your.pst files in Outlook by following instructions at. Optimize the file size limit for all your.To ensure that your Outlook installation, as part of the Microsoft 365 Apps installation, follows Microsoft best practices for performance, review the following article with general performance recommendations.Always download the latest Microsoft 365 Apps updates, depending on the release channel you are in, so as to have the latest performance optimizations and bug fixes.Another method to test functionality of your Outlook installation and email workflow is via the Microsoft Remote Connectivity tools, which are available online at.Check the operating system event logs for details of potential application crashes or slow performance.One possible option would be to run a quick repair or online repair of your Microsoft Office installation. If there any issues with your installation, the SARA tool will guide you on how to fix them. For example, to confirm that you have a healthy Outlook installation, run the Microsoft Support and Recovery Assistant (SARA) and choose the Outlook diagnostics section.Ensure that you have a healthy Microsoft 365 Apps installation, whether that be on Windows, MacOSX or a mobile device (iOS or Android).Solution #Ĭarry out the following steps to optimize Microsoft 365 application performance:


This how-to article provides guidance on how to optimize Microsoft 365 application performance. You observe performance delays or freezes/crashes in any of the Microsoft 365 applications, including the Microsoft Outlook client.
