I have AutoCAD 2010 and 2012 I when I go to regisgter both products they give me the same error
The serial number you entered is not valid. Try again. (1)
These are coming right off of the box.
Any chance these products were purchased with a Susbcription contract? If so, they will have been upgraded even though you never took them out of the box and your upgraded products will have different serial numbers and will invalidate the serial numbers of your old versions (the ones in the boxes).
Could you send me the serial numbers via Private Message (click on my camilo.lemos profile name and then on Send This User a Private Message) and I'll have a look at it for you?
I am facing this same problem with AutoCad Plant 3D 2012.
I wanted to upgrade my computer, so I uninstalled the program from the old computer and reinstalled it to the new one.
However, the error message appeared when I tried to put in the serial number and product key as shown on the box.
I don't know if the product was purchased with a subscription contract or has already been upgraded or not.
Could you please help me? I will send you the serial number and product key via Private Message.
I have the same problem. My AutoCADLT 2010 may have been updated with a software subscription but I need to reinstall it on a computer who HD crashed and the video card is not support in AutoCAD LT 2012 so I need to install this version even though it is older. Can I private message you the Serial Number and get this working again?
You best bet will be to fill out the form linked below for activation assistance
I ran into this issue, I called the support line and they advised me that due to a newer version being released the serial number no longer worked. They gave me a new one and got it activated
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