For Windows 10 and 11:
Remember to ensure the first octet works by using 2 , 6 , A , or E as the second character (e.g., 16AABBCCDDEE ).
Here’s the short version of why that happens, wrapped in a story:
Many home routers have a feature known as "MAC Address Clone". This tool allows you to set the router's outward-facing MAC address to any value you choose. After logging into your router's administration panel, look for a "MAC Address Clone" or "MAC Address Spoofing" section, typically under the "Advanced" or "Network" settings. By setting your router to use your desired MAC address, all traffic leaving your home network will appear to originate from that address. For Windows 10 and 11: Remember to ensure
When you see an error about the "first octet" while trying to change a wireless MAC address, it is because
On :
Navigate to the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\4d36e972-e325-11ce-bfc1-08002be10318 After logging into your router's administration panel, look
that trigger the error:
In the list, look for Network Address or Locally Administered Address . Select the Value radio button. Enter the New Address :
Determines if the address is globally unique (burned-in) or locally administered. Select the Value radio button
Are you missing the entirely in your settings?
sudo macchanger -r wlan0