: While Microsoft 365 apps require an internet connection at least once every 30 days to verify subscription status, KMS is the recommended alternative for devices that are permanently offline or in highly restricted environments. In these cases, organizations typically deploy Office LTSC instead of Microsoft 365. How KMS Activation Works
KMS is a local activation service provided by Microsoft. It allows organizations to activate systems within their own network, eliminating the need for individual computers to connect to Microsoft for product activation. A KMS host is set up on a local server, and client computers connect to this host to verify their license. How KMS Works with Office microsoft office 365 kms
Microsoft is gradually moving away from KMS toward cloud-based activation and subscription models. However, KMS remains supported for at least through 2028. That said, Microsoft recommends newer technologies for modern deployments: : While Microsoft 365 apps require an internet
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