You can try two ways to change the MAC address of your Netwirk Adapter in Windows XP

1. Use the control panel 😉

  • Open an MSDOS prompt (Start->Run->cmd)
  • Type ipconfig /all, you should see something like this:

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : duffy
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : DUFFY.DOM

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : DUFFY.DOM
Description . . . . . . . . . . . : AMD PCNET Family PCI Ethernet Adapter
Physical Address. . . . . . . . . : 00-11-22-33-44-55
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 10.0.2.16
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.0.2.2
DHCP Server . . . . . . . . . . . : 10.0.2.2
DNS Servers . . . . . . . . . . . : 10.0.2.3
Lease Obtained. . . . . . . . . . : Friday, December 12, 2008 16:51:52
Lease Expires . . . . . . . . . . : Saturday, December 13, 2008 16:51:52

  • Note the current physical address of your NIC Adapter.
  • Go to Start->Settings->Control Panel and double click on Network Connections
  • Right click on the NIC you want to change the MAC address and click on properties.
  • Under “General” tab, click on the “Configure” button
  • Click on “Advanced” tab
  • Under “Property section”, you shall select “Network
    Address” or “Locally Administered Address”
  • On the right side, under “Value”, type in the New MAC address you want to assign to your NIC without any “-“. (for example type “554433221100”)
  • Goto command prompt and type in “ipconfig /all” to verify the changes. If the changes are not materialized, then use the second method. You should see something like this:

C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : duffy
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : DUFFY.DOM

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : DUFFY.DOM
Description . . . . . . . . . . . : AMD PCNET Family PCI Ethernet Adapter
Physical Address. . . . . . . . . : 55-44-33-22-11-00
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 10.0.2.16
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.0.2.2
DHCP Server . . . . . . . . . . . : 10.0.2.2
DNS Servers . . . . . . . . . . . : 10.0.2.3
Lease Obtained. . . . . . . . . . : Friday, December 12, 2008 17:51:52
Lease Expires . . . . . . . . . . : Saturday, December 13, 2008 17:51:52

2. MacMakeUp

This is an application with a GUI interface that allows you to change the MAC address, you can download this tool from the internet.