An integrated threat protection solution designed to detect, investigate, and respond to cyber threats across Microsoft 365 services.
Yes—there can still be Outlook/Outlook.com email issues, and the fastest way to tell whether this is a service issue or a local Outlook issue is to check these in order:
- Check Outlook on the web.
If new mail appears there, the mailbox is working and the problem is likely the Outlook app on the device. - If using Outlook.com, check Microsoft service status at the Service Health Status site.
- If using classic Outlook for Windows:
- Look at the bottom of the Outlook window for Working Offline. If it appears, go to Send/Receive and turn off Work Offline.
- Confirm internet access in a browser.
- Run the Classic Outlook troubleshooters.
- For Microsoft 365 business, Microsoft also recommends running Microsoft Support and Recovery Assistant on the affected computer.
- If using Outlook.com and mail is missing, check:
- Other tab
- Junk Email folder and settings
- Filter > Sort > Date
- Whether forwarding is enabled
- Whether any rules are moving or hiding messages
- If emails will not load in Outlook.com, try disabling ad blockers or pop-up blockers, or use another browser such as Microsoft Edge.
- If the issue continues, use the Outlook troubleshooter or contact support.
References:
- Fixes or workarounds for recent issues on Outlook.com | Microsoft Support
- Find and fix email delivery issues as a Microsoft 365 for business admin
- Troubleshoot Outlook email setup | Microsoft Support
- Can't send or receive email in Outlook.com | Microsoft Support
- Issues sending and receiving email | Microsoft Support