You need the exact full build string (e.g., 25.1.00000.60234) for the Enforce Server, Detection Servers, and Endpoint Agents for troubleshooting, upgrade planning, hotfix verification, or opening a support case.
All supported versions (16.x, 25.1)
Log in to the Enforce Console as an Administrator.
For Enforce Server and Detection Servers:
Go to System > Servers and Detectors > Overview.
The Version column shows the full build number for the Enforce Server and every registered Detection Server.
For Endpoint Agents:
Go to System > Agents > Overview.
The Version column shows the full build number for every deployed agent.
See this KB for details on how to get the agent build information from the local agent binaries.