If you bought it in 2015 or 2016, your license key still works. Autodesk’s servers still authenticate old keys (as of 2025). You can download the installer from old Autodesk archives or reputable software libraries (like FileHippo or MajorGeeks).
Released during the golden era of Autodesk’s ownership, Sketchbook Pro 9 represents a high-water mark for fluidity, minimalism, and raw sketching efficiency. Even years after its release and subsequent corporate handoffs (to Sketchbook, Inc.), version 9 remains a gold standard for many professionals who refuse to upgrade. sketchbook pro 9
was launched in late 2015. At the time, Autodesk was pushing a subscription model (SaaS), but version 9 existed in a transitional purgatory: it was the last version available as a perpetual license before the forced move to "Sketchbook" (the freemium model) in 2016. If you bought it in 2015 or 2016,