--- title: "Request and activate Nexus licenses by product key" canonical: "https://help.vicon.com/space/Nexus220/897712436/Request%20and%20activate%20Nexus%20licenses%20by%20product%20key" format: markdown --- > ⚠️ **Important** > ⚠️ ▪️ If you have have received an email from **Vicon Motion Systems ** with the Subject line **Vicon - Your Entitlement Certificate**, complete the following self-service instructions to request and activate your Vicon license(s). > ⚠️ > ⚠️ ▪️ For information about licensing Vicon Nexus purchased before April 2026, please instead refer to the *Installing and licensing* guide for the relevant version of Nexus, available from the [Vicon documentation website](https://help.vicon.com/page/nexus-docs). From April 2026, new Vicon licenses are requested and activated through the online Thales Sentinel EMS (Entitlement Management System). If you have purchased Vicon software, you are sent an email from **Vicon Motion Systems ** with the Subject line **Vicon - Your Entitlement Certificate**. To find out how to request and activate your Vicon Nexus license, see the relevant instructions: > Macro (children) Watch a video that explains and demonstrates the licensing process: - [Vicon Licensing Workflow](https://share.vidyard.com/watch/pSwKGQBDKj8YtK6QEvPAud)