Receiving Duplicate Mails In Outlook

Tracy Kidder
Tracy Kidder Last Updated: May 19, 2022

Software: Office 2010, 2013 & 2016 | Last modified on 2018-06-18

Solutions for troubleshooting the issue that every received email in Outlook is received twice.

[Solution 1] Updating Microsoft Office

  1. Start any Office application, such as Outlook or Word
  2. Click File in the top-left corner, and then click Office Account or Account in the left sidebar
  3. In the right-side window click on Update Options
  4. If possible, click Update Now to update to the latest version of Office
  5. Test to see if the issue still occurs. If this is the case continue with solution 2

[Solution 2] Changing the root folder path to IMAP

  1. Open File and click Account Settings
  2. Select 'Account Settings...' in the drop-down menu
  3. Select the account that is experiencing the issue and click 'Change...'
  4. In the bottom right corner click 'More Settings...'
  5. Click the Advanced tab
  6. Change the Root folder path: to Inbox with a capital i
  7. Test to see if the issue still occurs. If this is the case continue with solution 2

[Solution 3] Disabling the antivirus plugin in Outlook

  1. Click File
  2. Click Options in the left side menu
  3. Click Add-Ins in the side menu
  4. Make sure the drop-down menu next to Manage is set to 'COM Add-ins' and click 'Go...'
  5. Uncheck the checkbox next to the antivirus add-in and close the menu to test the issue once again
  6. If the problem still occurs you can try to uncheck every COM Add-in in the list.

Tracy Kidder
Written by

Tracy Kidder

Tracy Kidder is an American author and Vietnam War veteran. Kidder may be best known, especially within the computing community, for his Pulitzer Prize-winning The Soul of a New Machine, an account of the development of Data General's Eclipse/MV minicomputer. The book typifies his distinctive style of research. He began following the project at its inception and, in addition to interviews, spent considerable time observing the engineers at work and outside of it. Using this perspective he was able to produce a more textured portrait of the development process than a purely retrospective study might.

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