What is MAC Address and How to Edit them in Windows XP, Vista, Windows 7 OS

What is MAC Address and How to Change Them in Your Computer
MAC address (Media Access Control) is the unique number (identifier) which is assigned by network interface hardware manufactures and store them into their hardware. MAC address used in hardware interface devices such as ethernet port, 802.11 wireless networks, Bluetooth adopter and still more.
The MAC address is a 12-digit hexadecimal number which is ranging between 0000 0000 0001 – FEFF FFFF FFFF. This 48-bit address space contains potentially 248 or 281,474,976,710,656 possible MAC addresses. Know about to changing MAC address in your PC is much needed one to hide your online identity, avoid potential of data losses and fight against hackers.
Here is the step by step instructions about how to change your unique MAC address into custom one. The instructions which is illustrated below just for educational purpose, not to be used for illegal activities.
Before to change the MAC address, find the current MAC address to ensure the changes after you did. Go to your command prompt and enter the command ipconfig /all and hit enter. Your Mac address will be shown as illustrated below.
Find Your Existing MAC Address of Your Computer
Based on the screenshot, the current MAC address is FE-FF-FF-FF-FF-FE. Let we change our MAC address using the following instructions
For Windows XP Users
Step -1
Windows XP Users Navigate to Control Panel (Classic View) > Network Connections
Windows XP Control Panel Network Connections Menu
Step -2
Select and right click on your network connection, and then click Properties.
Right Click Network Connection, and then Click Properties
Step – 3
Click and select local area connection properties Configure button as illustrated below.
Click and Select Local Area Connection Poroperties Configure Button Under Windows XP
Step – 4
Select the advanced tab (highlighted in red) as shown below.
Select Advanced Tab of the Network Adopter Properties - Windows XP
Step – 5
Under advanced tab, Select Network address Properties and enter the custom 12-digit hexadecimal number (Custom MAC ID) ranging between 0000 0000 0001 – FEFF FFFF FFFF (without spaces) as shown below and click OK. (In this tutorial, we used FEFEFEFEFE as Custom MAC ID)
Set 12 Digit Hexadecimal Custom MAC ID - Windows XP
All done. The New MAC ID assigned as FEFEFEFEFE in your Windows XP computer. If you wish to revert back default MAC ID in feature, do the same steps illustrated above and select Not Present radio button and click OK button. So, the default MAC ID will be restored.
For Windows Vista Users
Step – 1
Windows Vista Users Navigate to Control Panel (Classic View) > Network and Sharing Center > Manage Network Connections
Windows Vista Users Navigate to Control Panel
Step – 2
Click manage network connections and Select the appropriate Network icon, right click on it and select properties menu.
Navigate to Manage Network Connections, Right Click Your Network Connection, Click Properties
Step – 3
Under Properties, Click on Configure button to get into next step.
Select Configure Button in Network Connection Properties - Windows Vista
Step – 4
Under Advanced adapter settings, Select Locally administered address menu and enter the Custom MAC ID as illustrated below and click OK. You’re done. (In this tutorial we used FEFFFFFFFFFE as custom MAC ID)
Go to Advanced Tab and Change the MAC ID - Windows Vista
You are successfully changed the MAC ID now.
For Windows 7 Users
Step – 1
Navigate to Control Panel > All Control Panel Items > Network and Sharing Center
Windows 7 Users Navigate to Control Panel
Step – 2
From the left pan click Change Adapter settings
Select Change Apapter Settings - Windows 7
Step – 3
Select appropriate network connections adapter and click on Properties
Select Network Connections Adapter and Change the Properties - Windows 7
Step – 4
Click Configure button to go through the next step.
Select Configure Button - Windows 7
Step – 5
Goto advanced tab and select the locally administered address menu, then enter thecustom MAC id you wish to change as show in the below screenshot and Click OK.
Enter Custom MAC ID and Save Changes - Windows 7
You’re done. For windows 7 operating system, we have used AAAA-AAAA-AAAA (without hyphens) as custom MAC ID.
To verify the MAC ID, simply go to command prompt and enter the command ipconfig /all. The custom MAC ID will be shows besides to physical address for the corresponding network adapter you have modified. To restore the default MAC ID in windows vista and Windows 7 operating system, follow the same steps as specified above (according to operating system) and click Use default button and Hit OK. The default MAC ID will be used there after.


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