The error seems to be caused by Outlook not properly handling newsletters which use CSS (Cascading Style Sheet) instructions properly, especially concerning display size versus resolution of the device. The problem is not you, but with Outlook and Microsoft. This seems to randomly and rarely occur, but the problem is known and not resolved.
If you are using Office 2016 or Office 365, I suggest you un-install, reboot, then re-install Office from Office.com . Make sure your documents are safely stored somewhere.
Let us know ...
If you are using Office 2016 or Office 365, I suggest you un-install, reboot, then re-install Office from Office.com . Make sure your documents are safely stored somewhere.
Let us know ...