Outlook will not open or keeps crashing
Steps to try when Outlook freezes, closes or will not start.
- Wait two minutes. Outlook can be slow to start, especially after an update.
- Close it fully. Press Ctrl + Shift + Esc, find Outlook in the list, select it and choose End task.
- Open Outlook again while holding the Ctrl key. If it asks whether to start in safe mode, choose Yes.
- If it opens in safe mode, close it and start it normally. That sometimes clears the problem.
- Restart your computer.
In the meantime you can keep working. See Use Microsoft 365 in your web browser to reach your email from a browser.
Good to know
If it still fails, tell us what message appears, and whether the problem started after an update.