License Server VPX does not support Web Services for Licensing.
Studio, Director, and the Licensing Administration PowerShell Snap-in use Web Services for Licensing to do the following:
- Communicate with the License Server and manage users
- Allocate and install licenses
- Display License Server health, license usage, and other alert messages.
The Citrix Licensing Manager also uses it.
The License Management Service enables better capacity planning and license management. This service also helps you avoid prohibited practices:
- Duplication of licenses outside a Disaster Recovery (DR) environment
- Use of legacy licenses for new product versions
- Use of rescinded licenses
This service further alerts the administrator in Citrix Insight Services about duplicate licenses in a Disaster Recovery (DR) environment. For more information about Citrix Insight Services, see Citrix Insight Services.
The License Management Service uses product telemetry, built into the License Server, to send data to Citrix Insight Services. The License Management Service is not a Windows service. The first upload occurs one week after the License Server first starts and subsequent uploads occur every week thereafter. The schedule resets if you reinstall the License Server. If an upload fails, another attempt is made in 24 hours until either the upload succeeds or you disable the License Management Service. Citrix might use uploads to help you understand and support your license environment. See Use the command line to disable or enable the License Management Service.
The WMI service provides access to Citrix Licensing WMI classes. There's a namespace (ROOT\CitrixLicensing) with a few classes (notably, Citrix_GT_License_Pool) that gives license usage and availability counts. Querying the License Server too often (more than every 15 minutes) might impact performance negatively.