Changing Network Adapter to Force a Specific Machine ID in Geo SCADA

⚠️*Warning: This article contains information about editing the registry. Improper changes to the registry can permanently damage the operating system.
Always backup the registry before making any changes.*

Geo SCADA relies on a unique Machine ID to validate its license. This machine ID is derived from hardware identifiers such as the MAC address of a network adapter and the Disk ID. However, in some cases, especially after a machine reboot - the Machine ID may change, causing the license to become invalid. This typically happens when the network adapter used to calculate the Machine ID is not immediately available during Windows startup.

Geo SCADA provides a mechanism to influence the selection of of disk and network card to force a specific MachineId. This article explains how to configure Geo SCADA to consistently use a specific network adapter that is reliably present at startup.

To prevent this issue, we can configure Geo SCADA to use a network adapter that is always present during startup. In this example, we’ll use a specific network adapter that is available on all host startups.

Identify the MAC address and Disk ID of the stable hardware.

For example:

MAC Address: 48-AD-9A-XX-XX-XX

Disk ID: 98E6-XXXX

Update the Windows Registry.

Open the Registry Editor (regedit) and navigate to:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Schneider Electric\ClearSCADA\LicenceServer\

Add the following registry keys:

ProposedMACAddr: 48-AD-9A-XX-XX-XX
ProposedDiskId: 98E6-XXXX

Restart the Geo SCADA Expert License Server Service.

Restart the Geo SCADA License Server service to apply the new configuration. This will trigger Geo SCADA to recalculate the Machine ID using the specified MAC address and Disk ID.

Verify the New Machine ID.

After restarting the service, check the following registry keys:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Schneider Electric\ClearSCADA\LicenceServer\ProposedMachineId                                        

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Schneider Electric\ClearSCADA\LicenceServer\ProposedMachineIdTimeStamp

The value B50E8309-DA232D24-XXXXXXXX-XXXXXXXX represents the newly calculated Machine ID for the specific network card.

Notice that this new Machine ID listed under Server Icon → Licence Details. This confirms that the system has recognized the updated configuration.

Testing the Configuration

To test and validate the new Machine ID:
Request a Temporary License from the Support Engineer and apply it to the Geo SCADA server.
Restart the machine and confirm that the license remains active after reboot.

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