The computer ID is based on one of two sources: an Ethernet card's MAC address or a hard drive’s disk volume serial number. By default, desktop computers are based on an Ethernet card, and laptop computers are based on a hard drive. Disabling or removing this device can lead to the computer ID changing. This will cause issues with activated National Instruments software on the system. Common examples of this situation include:
- Switching the active Ethernet card (from wired to wireless)
- Relabeling a hard drive (ex. changing the label from C:\ to F:\)
- Reformatting a hard drive
Troubleshooting steps for an Ethernet card-based computer ID are:
- Add or remove cards with an Ethernet interface such as the PXI 6682
- Enable or disable any wireless or secondary Ethernet adapters
- Generate the computer ID from the volume disk serial number, change the Ethernet card used for activation, or force the activation to be based on a hard drive then generate a 20-digit activation code based off of this computer ID. See Generate New Computer ID for NI Software Activation for more detailed instructions.
Troubleshooting steps for a hard drive based computer ID are:
- Reconfigure the system so fixed drives are labeled C:\ or D:\
- Add or remove any temporary drives such as flash drives or DVDs.
- Change the hard drive used for activation or force the activation to be based on an Ethernet card. See Generate New Computer ID for NI Software Activation for more detailed instructions.