TECH SUPPORT NYC GUIDE
Outlook Not Receiving Email: What to Check
Outlook problems can come from the app, the Microsoft 365 account, mailbox rules, storage limits, authentication or the internet connection.
Check Outlook on the web
If mail arrives in the browser but not the desktop app, the mailbox is working and the issue is probably local to Outlook.
Look for storage warnings
A full mailbox or account storage limit can stop mail flow.
Check rules and junk folders
Messages may be moved automatically by a rule or filtered as junk.
Verify sign-in and MFA
Expired credentials or changed passwords can leave Outlook open while synchronization has actually stopped.
Do not delete the profile without a backup plan
Rebuilding an Outlook profile can help, but first confirm where local archives and unsynced data are stored.
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