Have a look over in the Previous Version Support forum for the information you seek.
Autodesk ended automatic reauthorizing of 2010 and older software as of August 31 2019, read all about it here https://knowledge.autodesk.com/support/autocad/learn-explore/caas/simplecontent/content/previous-ver... Sorry, you missed the deadline.
But... you can open a ticket with the Licensing support and confirm your options for sure here https://knowledge.autodesk.com/contact-support/installation-activation
If you still have your old Win7 PC and all works well, hang on to it for as long as it will last, then figure out a new option if you are unable to join Autodesk Subscription for newer software. If you find Autodesk software subscriptions too expensive, there are many other CAD packages out there with no subscription options (initial cost may still be comparably high) that you can go get and use.
Because autodesk is choosing to not honor our license by not giving out Activation numbers to force us to go to the very expensive subscription route.
There are alternatives. Google Progecad.
@Anonymous wrote:I think the term you are looking for is "Theft"
Maybe, but it's not accurate. The loss of activation can be prevented.
The loss of activation CAN NOT always be prevented. sometimes when windows updates autocad requires reactivation. Autodesk refuses to issue anymore activation numbers. They are stealing our software.
If they gave me the number and it just wouldn't run on windows 10 I would accept that. But It was running just fine before the update and there is no reason to believe it won't still run but I'll never know since without the activation number I can't even find out. Thank you autodesk for nothing.
Currently running progecad just fine with almost zero trouble getting up to speed.
@masterplans wrote:The loss of activation CAN NOT always be prevented.
If they gave me the number and it just wouldn't run on windows 10 I would accept that. But It was running just fine before the update and there is no reason to believe it won't still run
That thinking is exactly why everyone that has lost the use of their software is so upset. They actually believed that fallacy.
If they had a machine that ran the OS that the version was designed for and air-gapped it from the internet, they might be in a different boat and actually have a valid complaint if they lost the use of the program.
Good luck with that other program!