Learn how to fix common problems with Outlook for Microsoft 365, Outlook 2021, and Outlook 2019. Find out how to restart, uninstall, reinstall, update, and disable add-ins for Outlook.

1. Right-click the Start button, and click Run. 2. Type Outlook.exe /safe, and click OK. Tip: If Windows can't find Outlook.exe /safe, try using the full path to Outlook (for example C:\Program Files\Microsoft Office\OfficeXX, where XX is your version number).

Learn how to fix the error "Cannot start Microsoft Outlook. Cannot open the Outlook Window" or other problems when you try to launch Outlook. Follow the guided support or the troubleshooting steps provided by Microsoft.

Learn how to download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Find out the system requirements, product keys, activation steps, and troubleshooting tips.

The new Outlook for Windows will be pre-installed on new Windows devices and devices running Windows 11 version 23H2. If you're new to Windows 11 SV2 and above, you'll see new Outlook pinned to the Start menu starting September 2023.

Download and use the Microsoft Support and Recovery Assistant to diagnose and fix Outlook problems automatically. Learn how to troubleshoot startup, email, calendar, and other issues with Outlook for Windows.

Launch Outlook in safe mode by choosing one of the following options. In Windows 10, choose Start, type Outlook.exe /safe, and press Enter.

Learn how to get started with the new Outlook for Windows, a preview app with the latest features and design. Compare it with the classic Outlook and other email apps and see how to join the preview.

Install Microsoft 365 2019 or 2016 on a PC. Remember a one-time purchase version of Microsoft 365 is licensed for one install only. Depending on your browser, select Open file (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).

The new Outlook for Windows is for everyone. Now everyone with Windows gets the best of Outlook built into Windows for free. No subscription needed. You will write better emails with advanced AI built into the new Outlook for Windows to help you write impactful, clearer, mistake-free messages.