Wireless Network Connection Set The First Octet Work — Failed To Change Mac Address For

So 02:00:00:00:00:00 works fine; 00:00:00:00:00:00 fails.

Most drivers and Wi-Fi chips require the U/L bit to be 1 for a locally assigned address. If you set the first octet to a value where that bit is 0 (e.g., 00:... , 02:... , 04:... , etc., depending on the exact hex), the driver rejects the change as invalid. For example, 00:11:22:33:44:55 fails because 00 in binary ends with ...00000000 — bit 1 (second least significant) is 0. So 02:00:00:00:00:00 works fine; 00:00:00:00:00:00 fails

To make the change "stick," the first octet (the first two characters) must follow a specific pattern. Specifically, the second character of the MAC address must be . So 02:00:00:00:00:00 works fine

ipconfig /all | findstr /i "Physical"