“Over the past several years, Autodesk has reduced its support for 32-bit systems which are low in memory and result in a poor drafting experience and high crash rates. Starting with the next annual release of AutoCAD, there will no longer be a 32-bit offering for AutoCAD, AutoCAD LT and Developer Products.
By eliminating use of this outdated technology (and focusing on 64-bit solutions), we will be able to provide our customers a better AutoCAD experience and focus on delivering more value to our subscribers.
If you are currently running 64-bit AutoCAD or AutoCAD LT: There is no action for you to take and you will not be impacted by this change.
If you are currently using 32-bit AutoCAD or AutoCAD LT: Customers who are currently using 32-bit AutoCAD or AutoCAD LT can continue using their current software without any issue.
You can choose to stay on your current version of AutoCAD and/or AutoCAD LT or upgrade your OS and hardware (to take advantage of future releases of AutoCAD and LT that will only be available as 64-bit).”