Self-service options: see Troubleshooting Activation Issues.Contact Us for Assistance: If you receive an “Invalid Serial Number” error or encounter other issues with software activation, please contact us for assistance.You must supply both the Serial Number and Request Code to get an Activation Code. You need to generate a Request Code to get an Activation Code: When you enter your serial number during offline activation, you receive a Request Code.

Before starting, be sure to find your serial number and matching product key. You need a valid serial number: You’ll need a valid serial number and matching product key.Using manual activation for anything other than stand-alone, perpetual licenses will cause unnecessary problems. Do not use this method for subscription software activation, which requires an active internet connection. This manual activation method should not be used by subscribers: This manual activation workflow should only be used by those with a stand-alone, perpetual license or by students or educators with a stand-alone education license who do not have an active internet connection.Forced reactivation during troubleshooting.Upgraded or reinstalled operating system.Typical reasons for manual activation of perpetual license software include: If you have an education license and must be offline, you can also use this method to activate. However, stand-alone perpetual license products (non-subscription) purchased in 2016 or earlier can be activated manually offline. Newer versions of Autodesk products are activated online automatically. Activate Offline with Activation Code (Perpetual)

Autodesk revit 2021 offline activation