Updated: Jul 22, 2021
The three sails version of the Microsoft Dynamics NAV logo (pictured above) has been retired. Instead, the current guidance moving forward is to use the full-color Microsoft logo with the Dynamics logotype to support.
Here is the guidance for how to place the Dynamics logotype in relation to the Microsoft logo:
For background context, this guidance is part of a broader company commitment to ensure that Microsoft is clearly communicating that we are "One Microsoft" in our everyday work and interactions with customers, partners and other external audiences.