Sage Evolution: 3rd Party email popup

Good day.

Recently we've changed our Microsoft Office version to Office 365.

Since I rolled out the changes some of our Sage Evolution users get the attached popup when sending an email from Evolution.

I've been reading up all over Microsoft Windows and Sage support and I cannot find any reference to this.

Does anyone have any advice in dealing with this matter?

Kindest regards,

Brian Theron.