As of late 2022, vCenter Server 6.7 is no longer under general support. Users are strongly advised to upgrade to a supported version (vSphere 7 or 8) to maintain security and stability. Broadcom support portal General Support End October 15, 2022 Technical Guidance End November 15, 2023 Current State:
November 15, 2023.Environments running 6.7 no longer receive security patches, bug fixes, or new hardware support. Upgrading to vSphere 8 is recommended for continued support and security. How to Add and Assign a License Key Vmware Vcenter 6.7 License Key
You can still license 6.7 today, but you must own active Support and Subscription (SnS) for a newer version and downgrade. As of late 2022, vCenter Server 6