In case the network deems your adapter to be unsafe, you might not be able to connect. When you try to connect to a network, it may check the MAC address before giving you access. This address is unique and has many different purposes. What is Technitium Mac Address Changer?Īll network adapters have a MAC or Media Access Control address. The software is free to download and is suitable for both beginners and advanced users. It also offers presets such that you can easily switch between different configurations without much effort. Designed for Windows, the software provides various additional features that let you configure the network adapter. Technitium MAC Address Changer is a free and popular system utility tool that lets you change the MAC unique address of your Wi-Fi and LAN network adapters.