
For Plus/ Pro/ Enterprise, select Unity Plus or Pro and input your license key. Click the blue ‘Activate New License’ button. Click ‘ License Management' to the left of the window. Once signed in, click the cog icon in the top right corner of the window. Log into your Unity ID via the account icon in the top right of the window. The fastest way to activate your license is online. In order to use Unity, you need to reactivate your license on the same machine.
If you have recently updated your OS or changed any hardware, this can change your machine's Hardware ID making the current Unity License File (.ULF) redundant. If you do not have a Unity license activated, Projects will not open. Once you have assigned the license seat to yourself or another user in your Organization (for Plus, Pro & Enterprise only), there are a couple of ways to activate, depending on your network situation.
I have already activated a license on my machine, but the Unity Hub is saying I have no valid license. I have used Unity Personal, but would like to update the Editor to my new Plus, Pro or Enterprise license. I would like to activate a Personal, Plus, Pro or Enterprise license. I have not used Unity before and would like to know how to activate my license.