Navigate to the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\4d36e972-e325-11ce-bfc1-08002be10318
Failed to Change MAC Address for Wireless Network Connection: Set the First Octet to Make it Work
If your desired MAC address is being rejected, change the of your first octet to one of these specific hexadecimal values: x2 (e.g., 02 , 12 , A2 ) x6 (e.g., 06 , D6 , 26 ) xA (e.g., 0A , DA , EA ) xE (e.g., 0E , DE , 2E ) ✅ 1A:2B:3C:4D:5E:6F (Will succeed because the second digit
Windows 10/11, macOS, and modern Linux distributions have built-in MAC randomization for Wi-Fi scanning. If you manually try to change your MAC address while the OS is also randomizing it, you may get validation errors because the OS temporarily uses reserved or invalid address ranges.
This error arises because Windows enforces a strict rule for wireless adapters: the first octet of your custom MAC address must begin with , 06 , 0A , or 0E , with 02 being the most common and recommended solution. If you are using a tool like Technitium
✅ 1A:2B:3C:4D:5E:6F (Will succeed because the second digit is A ) Step-by-Step Guide: How to Properly Set the First Octet
If the "Network Address" property is not visible, proceed to Method 3 to modify the registry. or F .
This error typically occurs when using or similar software on Windows because modern Wi-Fi drivers enforce strict rules on spoofed addresses .
: Some drivers or firmware-level protections silently ignore or reject any MAC address that does not follow this specific "local" format.
If you are using a tool like Technitium MAC Address Changer or the Windows Device Manager, follow these steps:
The first octet must be 2, 3, 6, 7, A, B, E, or F .