I found a nice tool to change your MAC address in windows vista, you may not know what a MAC address is so educate yourself here once you do that you can change your mac address in vista with an application called MACMakeup.
I use it to change my ip address since my isp locks one ip per mac address I have. Some Cable Modem ISP’s assign IP addresses base on the PC’s MAC addresses. For whatever reason, if you need to swap 2 PC’s regularly to connect to the cable modem, it would be a lot easier to change MACaddresses rather than to change Network Interface Card (NIC).
Here are some reasons you may need this…
Protect Personal and Individual Privacy. Some companies track users via their MAC Addresses. In addition, there are more and more Wi-Fi Wireless connections available these days, and Wireless network security and privacy is all about MAC Addresses.
Perform Security Vulnerability Testing, Penetration Testing on MAC Address based Authentication and Authorization Systems, i.e. Wireless Access Points. (Disclaimer: Authorization to perform these tests must be obtained from the system owner(s)
Build “TRUE” Stand-by (offline) systems with the EXACT same CompterName, IP, and MAC ADDRESSES as the Primary Systems. If Stand-by systems should be put online, NO arp table refresh is necessary, which eliminates extra downtime.
Some online Game Players (Gamers) require changing the MAC addresses to fix IP problems for some reason.
Build High-Availability solutions. For example, some firewalls that run on multi-port NIC’s (i.e. quad port NIC) require the same MAC address for every port.
Troubleshoot Network problems. Arp Tables, Routering, Switching
Troubleshoot system problems
Test network management tools
Test incident response procedures on simulated network problems
Test Intrusion Detection Systems (IDS), whether they are Host and Network Based IDS.
If for whatever reason you need to keep the same MAC address as your old NIC, but your old NIC failed…
Some software can ONLY be installed and run on the systems with pre-defined MAC address in the license file. If you need to install one of these software to another system with a different Network Interface Card (NIC) because your NIC is broken
Some Cable Modem ISP’s assign IP addresses base on the PC’s MAC addresses. For whatever reason, if you need to swap 2 PC’s regularly to connect to the cable modem, it would be a lot easier to change the MAC addresses rather than to change Network Interface Card (NIC). (You need to check with your ISP and make sure you are not violating any service agreements.)
If you want detailed information on this app go here




I try to change my mac address on vista x64 and doesn’t work, I try to change the registru and the value is changed, but the mac address always be the phisical one (not take the virtual one)
any idea? thanks!
Same problem as you powa. I tried also different programs like : ” Techtinium mac address changer” but it displays an error !
Help !!
yeh i have vista 32 k version or whatever its called and it didnt work for me. i tried both those programs and they both said thay chnaged it but when i looked getmac in command prompt it came back with the old mac
its the same problem with me and stupid vista
I have the same error. The value is changed in registry, but ipconfig still shows the phisicall MAC..
same with me. Vistax64 and nothing is working, every time ipconfig/all returns the original address…
And the same with me….burn VISTA
@Vinicius: Did anyone tried to disable adapter and then enable after changeing MAC ? Does this trick help or no ?
KIA CHUTYAPA HAE??
[Important]:
Many MAC address tools don’t work well if changing MAC address in Vista and 7. But some people suggest the standard ways (from Windows GUI or Register), and seems they are fine. And they don’t understand why people still complain it doesn’t work.
Here, I found there is a very funny problem.
If you change your MAC address to 00-xxxxxxx or 11-xxxxxxxx 22-xxxxxx etc, you can’t be successful!
But if you change it with different first two characters, you will be OK!!!
What a funny and incredible!
@Jason: I have esactly tyhis problem! How is it possible? I don’t understand! Please, if you can make me know the solution.
Thanks
MAC addresses are hard wired to your network card and cant be changed. if you want to change your mac address then it means you have to get a new network card. Some software manufacturers claim to have softwares that either hide your mac address or send a differnt MAC address when browsing. i dnt know how true this is but personally u tried a couple of them and it didnt seem to work for me. Im running vista premium
[...] 4. http://dotnetwizard.net/…; [...]
@wilsonflex:
You’re obviously retarded. This function works perfectly in older versions of Windows because the registry overrides the hardware-coded address. But it doesn’t in Vista and Windows 7. Until someone figures out a way to do this in Vista, these sorts of programs are useless.
@all
for Vista/7 just begin the number with 12; i.e. 12XXXXXXXXXX [where X=1..F]
e.g. 1299924969FE
@wilsonflex
do some research about MAC spoofing before posting ok?
I tried this before on VISTA ultimate, XP sp3/sp2 etc and it does work. You need to “power cycle” or disable and enable the LAN Adapter. If it still doesn’t change you can try restarting your PC.
Lately I need to restart the PC for the change to occur. I don’t know if it is because of VISTA Sp2 or I messed something up in the services.msc or registry. I get an error code 38 “Windows cannot load the device driver for this hardware because a previous instance of the device driver is still in memory. (Code 38)”
I still haven’t figured out what I did to cause this as I didn’t need to restart before