See the tables below for a list of license server versions and their associated documentation.
Citrix does not provide hotfixes for license server components and does not support older license servers with newer products. The latest versions of the license server often contain resolutions to issues appearing in earlier versions. When you upgrade or install new Citrix products, upgrade the licensing components as well. New license servers are backward compatible and will work with older products and license files; however, new products often require the newest license server to check out licenses correctly. You can find the latest version from the Citrix Downloads site
To find your license server version number
If you are unsure if your license server version is current, you can verify it by comparing your version with the number on the Downloads site.
On a license server with the License Administration Console:
- Start the License Administration Console from the programs menu: Citrix > Management Consoles > License Administration Console.
- Click Administration and select the System Information tab. See the release version in the information list.
On a license server without the License Administration Console:
- Open the Registry Editor (Start > Run > regedit).
Note: Use Registry Editor to view the license server information only. Editing the Registry can cause serious problems that may require you to reinstall your operating system.
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\LicenseServer\Install.
The version number appears in the Version key in the format: 18.104.22.168 build 14100.
On servers running Windows 2008 Server 64-bit the registry key is