AFAIK, there  is no direct GUI link to check the license server name so i thought to put a post so that whenever needed, I can quickly check it.

Below are the 4 places where you can find license server name.

1. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\LSName
2. HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\Licensing\MFCM_LSHostName
3. [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Citrix\IMA\Licensing] “LicenseServerHostName”="
4. [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control\Citrix] “LSName”=""

If you want to change the license server name, best way is to open the xenapp server role manager and edit licensing, then change the name, apply and reboot.

For presentation server 4.5 license server is found at the below registry key:

hklm\software\citrix\licensing.