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Knowledge Base / Microsoft 365 / Fix Outlook Not Sending or Receiving Email
Microsoft 365

Fix Outlook Not Sending or Receiving Email

Use these steps when Outlook opens but email is delayed, stuck, or not syncing correctly.

Typical symptoms
Messages stay in Outbox, new messages do not appear, or Outlook shows disconnected or trying to connect.

Quick checks

  • Confirm your internet connection is stable.
  • Close and reopen Outlook.
  • Check whether Outlook shows Working Offline.
  • Sign out and back in if prompted.
  • Try Outlook on the web to confirm whether the mailbox itself is working.

Open a ticket if

  • Email has stopped for an extended period.
  • Multiple users are affected.
  • You see repeated password prompts or mailbox errors.
Create Ticket Back to Microsoft 365