Attachments not opening in Outlook 2016, Outlook 2019 & Office 365 when double clicking on them

Last Updated on May 14, 2020 by Next Century

If double clicking on an attachment is not working in Microsoft Outlook 2016, Outlook 2019 or Outlook Microsoft 365, a solution could be just to change the double-click speed in Mouse Settings.

Follow these steps:

  • Click on Start and type Mouse in to the Type here to search box, then click on Mouse settings or Open

    NOTE: If the Type here to search box is not visible, just start typing after you click on Start and it will appear

  • Then click on Additional mouse options

  • Then under Double-click speed, move the pointer to the left which will slow down the Double-click option

    NOTE: Sliding the Double-click speed slider one step to the left is normally sufficient to fix this issue. However, if the issue still occurs, you may have to slide it further.

  • Click OK

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