Windows 11 has a feature to use random MAC addresses. This feature is not compatible with our licensing system and has to be turned off. See instructions below:
Use random hardware addresses
There are two controls for using random hardware addresses—one is for all Wi-Fi networks and the other is for the specific Wi-Fi network you choose. When you turn it on for all networks, random hardware addresses are used while your PC scans for networks and connects to any network. When it's turned on for a specific network you choose, random hardware addresses are used the next time you connect to that network.
Turn off random hardware addresses for all networks:
Select the Start button, then select Settings > Network & Internet > Wi-Fi .
Turn off Use random hardware addresses.
Turn off random hardware addresses for a specific network:
Select the Start button, then select Settings > Network & Internet > Wi-Fi > Manage known networks.
Choose a network, then select Properties and choose the setting you want under Use random hardware addresses for this network.