I didn't want to add nwe topic so I refreshed this one. I have the same problem with student version of 3ds Max 2012 32-bit. i would appreciate if you can help me solve this problem.
Please send me a Private Message (click on the envelope next to your profile at the top of the page, Compose New Message, and then enter my arlinpega.bibat profile name) with your serial number so that we may check our record. Upon validation, we may activate your serial number manually. Alternatively, you may contact our Registration and Activation Team directly through License Assistance Form.
I have the same problem with that Error 400, and that by all software (expection Autodesk Sketchbook Pro)
I have a Student Account.
I have the same problem with Autocad 2012 and Revit Architecture 2012. I have a studen account and I used the activation codes given to me when i downloaded the programs from the autodesk page.
|Product:||Autodesk 3ds Max 2013|
|Request code:||GY7U 6AJN NQ65 ZAPN C43L PFLX Q83A K2TZ|
I just processed and sent your activation to the registered email address (please let me know if you don't receive it).
For future reference, please avoid posting sensitive information such as serial numbers in the forums.