The First Octet Work ((exclusive)) - Failed To Change Mac Address For Wireless Network Connection Set

Scroll through the Property list and look for or Locally Administered Address . Select the Value radio button.

Understanding and Fixing the Error: "Failed to Change MAC Address for Wireless Network Connection, Set the First Octet..." Scroll through the Property list and look for

If you've tried the standard methods and the change fails, it's likely you're hitting this restriction. Here are some workarounds. Scroll through the Property list and look for

Now take 00 as the first octet. Binary: 0000 0000 → Bit 2 is 0 → Globally unique. Scroll through the Property list and look for

The Immutable Octet: Troubleshooting First-Octet Failures in MAC Address Spoofing for Wireless Adapters

If the changes still aren't working, consider these points:

On Linux and macOS, you can change the MAC address using terminal commands.