RE-install

[drafter1411]

Hello everyone. My computer crashed and I had all of my hard drive contents transfered to a new computer. So I need to get an activation code for the re-install for my C3D 2013. I went to this web site. (registeronce.autodek.com) entered my serial number just as it is on the confromation sheet, that I got

last year when I purchased C3D. Comes back Invalid number

thanks

[DarrenP · Accepted solution]

your serial number was probably upgraded to something else
or could be this: http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Error-S...

You can use the online method to activate your license here:

http://knowledge.autodesk.com/contactus or http://download.autodesk.com/us/support/RegistrationAndActivationWebForm.html?language=en
for the contact us page use these steps to fill out a form
1. Activation & Registration

2. Activating a Product

3. Activation Codes & Request Codes

4. I still need help

5. Ask for assistance at the bottom