If you purchase new Autodesk license, then it must be a subscription with a named user activation. You can’t use a serial number, and you can’t purchase a network license.
You should see this dialog when trying yo activate your software.
![](https://www.cad-notes.com/wp-content/uploads/2020/10/sign-in-activation.jpg)
But if you don’t see the sign in option like below, how can you activate the software?
![](https://www.cad-notes.com/wp-content/uploads/2020/10/sign-in-activation-missing.jpg)
The reason why you can’t see the sign-in option is that your computer is not connected to the internet. Or at least Autodesk thinks that way. Your computer might be online but it doesn’t have a connection to Autodesk licensing service. It can be because of anti-virus, firewall, proxy, or other services block the connection.
The solution is to allow URLs and protocols required. So your Autodesk software can access the license.
Try to follow these two common fix:
- Which URLs/Protocols need to be allowed for Autodesk Subscription Licensing
- How to enable automatic proxy detection (WPAD) for Windows
After you follow the Knowledge Base, you should be able to sign-in and activate your software.