Wednesday, November 17, 2010
Anu
There are many third party tools/softwares to change the MAC address, but what if you can do same thing in a easy n simple way to do that same thing... :)
Method 1
This isdepending on the type of Network Interface Card (NIC) you have. If youhave a card that doesn’t support Clone MAC address, then you have to go tosecond method.
- Go to Start - Settings - Control Panel and double click on Network and Dial-up 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 should see an item called “Network Address” or "Locally Administered Address", click on it.
- On the right side, under “Value”, type in the New MAC address you want to assign to your NIC. Usually this value is entered without the “-“ between the MAC address numbers.
- Goto command prompt and type in “ipconfig /all” or “net config rdr” to verify the changes. If the changes are not materialized, then use the second method.
- If successful, reboot your systems.
Method 2:
Thismethod requires some knowledge on the Windows Registry. If you are notfamiliar with Windows Registry, just use the SMAC toolto change the MAC addresses, or consult with a technical person before youattempt on the following steps. Also, make sure you have a good backup ofyour registry.
a. Goto command prompt and type “ipconfig /all”, and
I. Record the Description for theNIC you want to change.
II. Record the Physical Addressfor the NIC you want to change. Physical Address is the MAC Address
figure 1.
figure 1.
b. Goto command prompt and type “net config rdr”, and youshould see something like
figure 2.
c. Remember the number between the long number (GUID) insidethe { }. For example, in the above “net config rdr” output, for MACaddress “00C095ECB793,” you should remember{1C9324AD-ADB7-4920-B02D-AB281838637A}. You can copy and paste it to theNotepad, that’s probably the easiest way. (See figure 2.)
d. Go to Start - Run, type “regedt32” to start registryeditor. Do not use “Regedit”
e. Do a BACKUP of your registry in case you screw up thefollowing steps. To do this
I. Click on “HKEY_LOCAL_MACHINE onLocal Machine” sub-window
II. Click on the root key “HKEY_LOCAL_MACHINE”.
III. Click on the drop-down menu“Registry - Save Subtree As” and save the backup registry in to afile. Keep this file in a safe place.
f. Go to“HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}. Double click on it to expand the tree. The subkeys are 4-digit numbers,which represent particular network adapters. You should see it startswith 0000, then 0001, 0002, 0003 and so on. (See figure 3.)
Figure 3.
g. Go through each subkey that starts with 0000. Click on 0000, check DriverDesc keyword on the right to see if that'sthe NIC you want to change the MAC address. The DriveDesc shouldmatch the Description you recorded from step (a.-I.). If you arenot 100% sure about the DriverDesc, then you can verify by checking if the NetCfgInstanceIDkeyword value matches the GUID from step (c).
If there is no match, then move on to 0001, 0002, 0003, and so on, until youfind the one you want. Usually 0000 contains the first NIC you installedon the computer.
In this demonstration, 0000 is the NIC I selected. (See figure 3.)
If there is no match, then move on to 0001, 0002, 0003, and so on, until youfind the one you want. Usually 0000 contains the first NIC you installedon the computer.
In this demonstration, 0000 is the NIC I selected. (See figure 3.)
h. Once you selected the subkey (i.e. 0000), check ifthere is a keyword "NetworkAddress" exist in the right side of thewindow. (See figure 3.)
I. If "NetworkAddress"keyword does not exist, then create this new keyword:
i. Click on thedrop down menu “Edit - Add Value”.
ii. In theAdd Value window, enter the following value then click OK. (See figure4.)
ValueName: = NetworkAddress
DataType: = REG_SZ
ValueName: = NetworkAddress
DataType: = REG_SZ
Figure 4.
iii. StringEditor window will pop up at this time (see figure 5.)
iv. Enterthe new MAC address you want to modify. Then click OK.
(There should not be any"-" in this address. Your entry should only consist of 12digits as seen in the figure 5.)
(There should not be any"-" in this address. Your entry should only consist of 12digits as seen in the figure 5.)
II. If "NetworkAddress"keyword exists, make sure it shows the keyword type is REG_SZ, and it shouldshow as NetworkAddress:REG_SZ: . This keyword might not havea value at this time.
i. Double clickon the keyword NetworkAddress and the String Editor window will pop up.(See Figure 5.)
ii. Enterthe new MAC address you want to modify. Then click OK.
(There should not be any"-" in this address. Your entry should only consist of 12digits as seen in the figure 5.)
(There should not be any"-" in this address. Your entry should only consist of 12digits as seen in the figure 5.)
Figure 5.
j. There are 2 ways to make the new MAC address active. Method I does not require a system reboot:
I. GotoStart->Setting->Control Panel, and double click on "NetworkNeighborhood".
WARNING: Make sure you understand that you WILL lose thenetwork connection after completing step "ii." below, and
if you have a DHCP client, you will get a new IP addressafter completing step "iii."
WARNING: Make sure you understand that you WILL lose thenetwork connection after completing step "ii." below, and
if you have a DHCP client, you will get a new IP addressafter completing step "iii."
i. Selectthe Network Adaptor you just changed the MAC address.
ii. Rightclick on the selected Network Adaptor and click "Disable."
Verify the status column for this adaptorchanges to "Disabled"
Verify the status column for this adaptorchanges to "Disabled"
iii. Rightclick on the selected Network Adaptor and click "Enable."
Verify the status column for this adaptorchanges to "Enabled"
Verify the status column for this adaptorchanges to "Enabled"
iv. If forany reason it cannot be disabled or re-enabled, you have to
reboot your system to make thechanges effective.
reboot your system to make thechanges effective.
II. Reboot your Windowssystem.
k. Once completing step j (if rebooting the system,wait until the reboot is completed), go to command prompt, type “ipconfig /all”to confirm the new MAC address.
Restore The TRUE Hardware burned-in MAC Address:
a. Remove the entry you added:
I. If you followed Method 1, then goback to the advanced properties window and remove the entry you add.
II. If you followed Method 2, thenremove the "NetworkAddress" keyword you added in the registry.
b. Use step (j) above to activate thechange you make.
c. Once rebooted, go to command prompt,type “ipconfig /all” to confirm the original MAC address.
If MAC Address changes does not work:
If for whatever reason the MACaddress cannot be changed using method 2, make sure you restore the registrysetting by following the "Restore The TRUE Hardware burned-in MACAddress" instruction above. If necessary, restore the registry youjust backed-up to get your system back to the original state. You can dothis by clicking on the drop-down menu “Registry-Restore,” and restore yourbackup registry file.
Thanks
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