Using Windows OS
1. Ethernet configuration change
One adapter is removed from the system or replaced with another one. This action can occur when either the hardware component is changed or removed but also when the adapters are disabled/enabled from Network and Sharing Center on Windows Vista/7 or Network Connections on Windows XP/2000.
- The license is not lost when the network software settings ( ISP, IP, etc. ) are changed.
- When the network cable is unplugged or plugged the network adapter configuration is not changed.
- Switching on different wireless networks is not causing any network adapter configuration change.
2. Domain Name System (DNS) Server
You may experience license issues after you install the Domain Name System (DNS) Server service security update 953230 (MS08-037) and then restart the computer. After security update 953230 is installed, the License Server service may not start on a computer that is running Windows 2000, Windows Server 2003 and Windows Server 2008. This issue occurs if the service has been allocated to the DNS Server service after security update 953230 is installed.
This situation could be solved by reserving the range of ports used by the License Server, process which could be performed following these steps:
Windows Server 2003 or Windows XP Professional
- Start Registry Editor (Regedit.exe).
- Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
- On the Edit menu, point to New, and then click Multi-string Value.
- Right-click the new value, click Rename, type ReservedPorts, and then press ENTER.
- Double-click the ReservedPorts value, type the range of ports “5436-5436 5536-5536”, and then click OK.
- Click OK.
- Quit Registry Editor.
- Restart the computer after you make these changes, for the changes to take effect.
Important This fix contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 How to back up and restore the registry in Windows
More informations could be found at accessing the following websites: