The issue wasn't the KMS host itself. The issue was .
He saved the PowerShell script, documented the steps, and added a calendar reminder for 170 days from now: "Check KMS activation count." Office 365 Kms Activation
Six months ago, Alex had migrated the company from Office 2016 (perpetual, KMS-friendly) to Microsoft 365 Apps for enterprise (subscription-based, designed for cloud activation). He'd assumed the old KMS server would just handle the new clients. It did not. The issue wasn't the KMS host itself
He called his old mentor, Carmen.
cscript slmgr.vbs /ipk <New-Office365-KMS-Key> cscript slmgr.vbs /dli cscript slmgr.vbs /ato The first two commands worked. The third—activation against Microsoft's servers—failed. "Error: 0xC004F074. No KMS key found." documented the steps
