The serial number you entered is not valid." during Autodesk software activation | AutoCAD | Autodesk Knowledge Network
How to change the Standalone Serial number without uninstalling/reinstalling - IMAGINiT Technologies Support Blog
How to change the Standalone Serial number without uninstalling/reinstalling - IMAGINiT Technologies Support Blog
![Solved: 3DS MAX 2019 product key problem - Autodesk Community - Subscription, Installation and Licensing Solved: 3DS MAX 2019 product key problem - Autodesk Community - Subscription, Installation and Licensing](https://forums.autodesk.com/autodesk/attachments/autodesk/24/208946/1/3dsmax2019-01.jpg)