MAC Address + UNC Pathname (server licence)

This Installation Code combines the MAC address with the absolute path of the licence file (for details why using the pathname see Volume ID + UNC pathname)

Pros/Cons

+ After reinstallation of Windows, the MAC address does not change

+ If an image tool is used, the MAC address is still different

+ Good within a network because the MAC address must be unique

+ Allows only one installation on one machine

- See considerations above for multiple network cards

- Restricted use in network environment with Windows 98 / NT machines

Recommendation

•	Should be used for enterprise users because disk imaging is often used to set up multiple machines and a reinstallation of Windows does not need a new licensing.

For a server licence only use an installation code combined with the UNC pathname.