“Harold,” she said after reviewing his logs, “your SCCM installation is from 2016. That key you found? It’s for System Center 2012 R2. It won’t work. But…” She paused. “You have 1,250 devices. You only need 500 licenses. Why not just uninstall the SCCM client from the 750 dead devices?”
Here's a step-by-step overview of how SCCM license keys work: sccm license key
“Then you do the dance,” Rosa said. “You find the oldest server in your domain. The one that’s been rebooted maybe twice in a decade. You pull the registry from it. Sometimes the old SCCM client leaves a breadcrumb.” “Harold,” she said after reviewing his logs, “your