https://forums.autodesk.com/t5/autocad-forum/autocad-2015-with-windows-10-mouse-wheel-free-orbit-wont-work/m-p/5807157#M313176 understand that Win10 isn't supported by Autodesk and there is a small possibility that if any support happens it may be for just the 2016 versions. In the meantime while you weigh the possibility of rolling back to Win8, keep an eye on the forums here and anywhere else on the net where people are posting their experiences - someone may find a workaround/fix. There is also a link to the right of your post titled "Windows 10 Support" which you may also want to refer to regarding anything Autodesk has to offer related to Win10. Good Luck. Tue, 08 Sep 2015 12:38:41 GMT ampster40 2015-09-08T12:38:41Z