Microsoft Toolkit 2.5.2 _top_

: A background service that automatically renews activation every 180 days to keep the software licensed.

In a genuine corporate environment, a company sets up a KMS host on its network. Client machines (running Windows or Office) connect to this host every 180 days to renew their activation. The host does not require individual product keys for each client; instead, it uses a single KMS host key. Microsoft Toolkit 2.5.2

Instead of cracking Office, use: