Outlook App Not Syncing Emails

Outlook App Not Syncing Emails

We've come to know that the Outlook app is not syncing emails and the email are suddenly not showing up in the inbox. The problem could be the synchronization issue, or the IMAP was not configured properly. This tends to appear across all hosts due to an update Microsoft pushed to its users. If you have not updated the Outlook app for a while, we’d recommend you not to update for a while until Microsoft corrects the issue. If you have updated already, we have described some steps to resolve the issue as a temporary fix. This issue with the Outlook app will cause the IMAP folders not to synchronize properly, and thus not receiving new mails to your inbox.


  • Step 1:Open the Outlook application.
  • Step 2:Click the File menu.
  • Step 3:Select the Add account option.
  • Step 4:Select Manual Setup and proceed to the next step.
  • Step 5:Click the radio button for the POP or IMAP option under Choose Service, then click the Next button.
  • Step 6:Enter the information for User Information, Server Information, and Logon Information.
  • Step 7:Click the More Settings button.
  • Step 8:Click the Outgoing Server tab and select the checkbox for the My outgoing server (SMTP) requires authentication option.
  • Step 9:Click the OK button.
  • Step 10:Select Advanced and enter the port number information.
  • Step 11:Click OK and wait for Outlook to check the account configured.
  • Step 12:Click Finish when the verification is complete.

This method can solve the issue of emails not showing in the IMAP inbox.


As mentioned in this article, the issue can be because of synchronization issues or a Microsoft update. Here are the steps.

  • Step 1:Open Control Panel.
  • Step 2:Select Programs and Features.
  • Step 3:Choose the update that goes by the serial number KB2837618 or KB2837643.
  • Step 4:Select and click the Remove option.


  • Step 1:Close the background apps if there are any open.
  • Step 2:Close the Outlook application.
  • Step 3:Restart your Windows or Mac computer.
  • Step 4:Once the system boots, open Microsoft Outlook.
  • Step 5:You will find the app syncing emails properly.


The issue with the Outlook app not syncing emails could be because of the sync settings.

  • Step 1:Open the Outlook application.
  • Step 2:Click the Settings icon.
  • Step 3:Select the email account related to the syncing issue.
  • Step 4:Ensure that the slider is enabled for the options Sync contacts and Sync calendars.

Follow one of the methods or both methods to solve the Outlook app not syncing emails. If you have issues related to the process, click the CALL button to talk to our technical assistant.

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