Troubleshoot Outlook for Windows issues - Microsoft Support
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.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013, New Outlook for Windows
I can’t start Microsoft Outlook or receive the error “Cannot start ...
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.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Microsoft 365 admin
Open Outlook in safe mode - Microsoft Support
Learn how to start Outlook in safe mode, which disables add-ins, if Outlook won't open. Find the full path to Outlook.exe /safe and more tips on disabling add-ins.
Start using new Outlook for Windows - Microsoft Support
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.
Applies To: Outlook for Microsoft 365, New Outlook for Windows
Repair Outlook Data Files (.pst and .ost) - Microsoft Support
You can use the Inbox Repair tool (SCANPST.EXE) to diagnose and repair errors in your Outlook data file. The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good shape.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
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.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Resolve Outlook for Windows issues with automated troubleshooting tools
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.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013
Outlook not responding, stuck at "Processing," stopped working, or ...
Launch Outlook in safe mode by choosing one of the following options. In Windows 10, choose Start, type Outlook.exe /safe, and press Enter.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
What version of Outlook do I have? - Microsoft Support
There are now two versions of Outlook for Windows: new Outlook for Windows and classic Outlook for Windows. To determine if the Outlook for Windows version you're using is new Outlook or classic Outlook, check if there's a File tab on the ribbon. If File doesn't appear, you're using new Outlook.
Applies To: Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Microsoft 365 admin, Outlook.com, New Outlook for Windows, Outlook Web App
New and classic Outlook for Windows feature comparison
New Outlook for Windows. Last updated: September 3, 2024. The new Outlook for Windows brings you the latest features, Microsoft Copilot-assisted capabilities, and a new modern and simplified design to help you connect, organize, and get things done.
Applies To: Outlook for Microsoft 365, New Outlook for Windows