Cause: The terminal server might not be able to locate the license server.
Solution: Perform the following steps:
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1.
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Verify that the license server is correctly installed.
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2.
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Verify that the Terminal Server Licensing service is running on the license server.
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3.
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Verify that the client, the terminal server, and the license server can communicate by ensuring that Domain Name System (DNS) is configured correctly on each computer. To do this, run the ping command from each computer to each computer using the IP address, FQDN, and the NetBIOS name. If any of the ping commands fail, verify the DNS configuration on the network.
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4.
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On the terminal server, set a preferred licensing server to connect to. You can do this by using the registry, a Windows Management Instrumentation (WMI) script, or, in Windows Server 2003 with Service Pack 1, you can use Group Policy settings or Terminal Server Configuration
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Solution: If the previous solution does not resolve this problem, create a backup of the MSLicensing registry key and its subkeys on the client, and then remove the original key and subkeys by doing the following:
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1.
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On the client, navigate to the following registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSLicensing.
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2.
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Click MSLicensing.
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3.
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On the Registry menu, click Export Registry File.
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4.
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In the File name box, type mslicensingbackup, and then click Save.
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5.
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If you need to restore this registry key in the future, double-click mslicensingbackup.reg.
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6.
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On the Edit menu, click Delete, and then click Yes to confirm the deletion of the MSLicensing registry subkey.
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7.
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Close Registry Editor, and then restart the computer.
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When the client is restarted, the missing registry key is rebuilt.
Caution
Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on the computer.