Citrix Director - License Server shows error "Cannot retrieve the data"

1. Set current CEIP status on License Server by following below steps:
Launch the Citrix Licensing Manager;
Select Server Configuration by clicking gear icon in the upper right corner;
Select the 3rd item "Do not send any data" under ‘Share usage statistics with Citrix’

2. Verify that above change takes effect  by following below step:
Check the opt file "C:\Program Files (x86)\Citrix\Licensing\MyFiles\CITRIX.opt", make sure the 3rd line is commented as below
#CITRIX CEIP NONE

3. Delete the files in the folder C:\Program Files (x86)\Citrix\Licensing\LS\resource\usage. Ensure to backup the files before deleting them.

4. Restart Citrix Licensing Service.

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Problem Cause

License server cannot connect to cis.citrix.com