Install or reinstall classic Outlook on a Windows PC
To install a standalone version of classic Outlook for Windows, select your language from the dropdown, and then select Download. Follow the prompts to complete the installation.
Applies To:
New Outlook for Windows
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.
Troubleshoot Outlook for Windows issues - Microsoft Support
Learn how to fix common problems with Outlook, such as crashing, freezing, or not opening. Find out how to restart, uninstall, reinstall, or update Outlook, and how to use safe mode or disable add-ins.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, New Outlook for Windows
I can’t start Microsoft Outlook or receive the error “Cannot start ...
Are you having trouble starting Outlook or receiving "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages? We can fix the problem for you, or you can use the troubleshooting steps we're providing below to help resolve these startup issues.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, Microsoft Office
Fix your Outlook email connection by repairing your profile
Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Microsoft 365 admin
Why does Outlook not appear on the desktop while its process is running ...
Let's find a way to resolve the problem. End Outlook.exe Task Process Right click on any space of the Taskbar, and select " Start Task Manager ". Switch to " Process " tab to see if an outlook.exe exists under the image name. If it does, check it and click " End Process " button to end the process.
Resolve Outlook for Windows issues with automated troubleshooting tools
Get Help has troubleshooters for classic Outlook for Windows you can run for many common scenarios, such as Outlook startup or profile setup problems. These often help resolve issues without the need to contact support.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016
Outlook crashes or stops responding when used with Office 365
This article describes how to troubleshoot Microsoft Outlook when it's used together with Microsoft 365 and: Outlook stops responding (hangs). Outlook crashes even though you aren't actively using it. Outlook crashes when you start it. Try steps 1 through 3 in order until the issue is cleared.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016
How to use Outlook Support and Recovery Assistant diagnostics in ...
Outlook Support and Recovery Assistant diagnostics have been migrated to Windows Get Help. Use Outlook troubleshooters in Windows Get Help application. To invoke the classic Outlook diagnostics in the Get Help app directly go to Classic Outlook troubleshooters.
Applies To:
Outlook for Microsoft 365, Microsoft365.com, Microsoft Office
Command-line switches for Microsoft Office products
Use command-line switches to customize the startup process for Microsott Office programs: Word, Excel, PowerPoint, Outlook, and Access.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Excel 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016