Step 1: First verify that the host name that you are using is correct.
Try to ping the host name and verify its response, in the cmd.exe execute: ping <hostname>
In the following example the hostname is ws06-xp
If this step failed the issue could be one of the followings:
The host name that you are using is wrong, try to verify it.
The issue can be related to DNS configuration, try to replace the <hostname> with the license server IP address.
Step 2: Verify you are able to access the service using a browser.
Enter the following URL: http://<hostname>:1947
The following screen should be displayed:
If this step failed the issue could be one of the following:
The sentinel server is down.
If you were able to connect to the ‘Sentinel Admin Control Center’ try to check you proxy Java settings.
In the ‘Control Panel’ select "Java":
Select ‘Network Settings…’ and verify your proxy setting is correct and aligned with your browser settings.