Why does this problem happen?
Nx Witness software licenses are tied to a specific Server's HWID (Hardware ID).
If you've lost your licenses there is a high probability the computer that hosts the Nx Witness Server application where the licenses were originally activated has been modified in some way.
What is a HWID?
The HWID is a unique 34-digit identifier (example:03000102030405060708090a0b0c0d0e0f) generated when the Nx Witness Media Server is installed on a Windows, Ubuntu Linux, or ARM device. The HWID is based on a combination of software and hardware of the computing device upon which Nx Witness is installed.
The following items are used to generate a unique HWID for each computer upon which Nx Witness is installed:
- MAC Address
After installing Nx Witness on a server any modification in the software or hardware items above will result in a change of HWID and an invalidation of licenses attached to that device.
Most Common Reasons Your HWID Changes:
1. A change in MAC address due to the NIC (Network Interface Card) configuration on your computer hardware changing
- Physical Change: You've replaced a bad NIC.
- Software Change: You've enabled or disabled NIC ports, causing the existing NIC to no longer be recognized. Improperly configured NIC teaming/bonding can also cause issues.
- HWID change due to NIC Troubleshooting Guide
2. The Motherboard configuration on your computer hardware has changed.
- Physical Change: You've had a failed motherboard and had to replace it on the computer the licenses were originally assigned to. Changing the motherboard will result in a hardware change.
- Software Change: In very rare cases a Motherboard BIOS update will cause the HWID to change.
If you have any questions related to this topic or you want to share your experience with other community members or our team, please visit and engage in our support community or reach out to your local reseller.