The advanced support team helped John to recover the lost license key, and he was able to activate the iLO 4 interface permanently.
While basic iLO functionality is free, the features you actually want (like the remote KVM) require a license. hp ilo 4 license key
License keys can be traced back to original enterprise owners. More importantly, using a cracked or shared key means you cannot update iLO firmware safely. Unpatched iLO 4 firmware has major vulnerabilities (looking at you, CVE-2017-12542). If your iLO is exposed to the internet (never do that), an attacker can take full control. The advanced support team helped John to recover