not Activation

[Anonymous]

Enter your serial No

"The serial number you entered is invalid. Please re-enter. (Error 1) "

Please tell me how to solve when not activated.

[lynn_zhang]

Hi @Y060 Welcome to Autodesk Community!

Usually if you see that type of error it means that the license has been marked upgraded or returned. To have your license status verified, please contact the Activation and Registration team directly:

1.  Visit http://knowledge.autodesk.com/contactus
2.  Select “Activation & Registration” or “License Management”
3.  Select appropriate subtopics from the pull-down menus
4.  Select “I Still Need Help”  if you need personal assistance

If you have any other questions please let us know. Thanks!