Additional Information
Despite
NI License Manager and the
command line executable showing one Computer ID, a computer usually has multiple Computer IDs, all of which are valid for licensing and activating NI products. In other words, the Computer IDs generated based on your network interfaces' MAC address and the Computer ID based on the hard drive’s disk volume serial number are all valid and will work for licensing as long as the component the ID was generated on is present in your system.
To generate the Computer ID from your hard drive the drive with the first letter is being used. This is usually the drive with letter
C: and attaching a new drive to your computer with letter sooner in the alphabet (like drive
A:) will cause the Computer ID originated on the drive's serial number to change. Note that one computer can only have one disk serial number based Computer ID at a time due to this rule.
Please also keep in mind that the Computer ID generated from your hard drive will change every time you format the hard drive.
For each of your networking interfaces, a Computer ID based on their MAC addresses will be generated. All these IDs will be considered valid as long as the given interface is present in your system. If the NI License Manager or the command line application uses a network interface's MAC address for the ID to be shown (usually on desktop computers), the ID corresponding to the interface with the lowest metric value will be shown.
This article explains how the priority of the network interfaces can be changed in Microsoft Windows.
If you would like to know more information on what was the source of a specific Computer ID, please
Contact NI Support.