It is critical to understand that Microsoft Dynamics NAV 2009 R2 has long passed its official support window. Mainstream Support Ended: January 13, 2015. Extended Support Ended: January 14, 2020.
The old-school, green-screen-like, grid-based interface. It was incredibly fast, keyboard-driven, and beloved by developers and power users for bulk data entry (e.g., posting 500 sales lines in 2 minutes without touching a mouse). microsoft dynamics nav 2009 r2 download