For , KMS is the preferred method when you have a volume licensing agreement (e.g., Enterprise Agreement, Open License, or MPSA) and manage more than a handful of devices.

Before implementing Visio 2021 KMS activation, ensure you meet the following prerequisites:

On each volume-licensed Visio 2021 installation:

These keys are , but to convert a volume license client to point to a KMS host. They are published by Microsoft. Use them in ODT or during manual setup.