It is said that the installation is fails when the receiver is connected and suggests to download a driver. I can't not much install on machines running Windows 7, 64-bit at work where I need to use different machines.
You usually only need to use it on one other machine is to plug in the receiver, which installs and you can use it. I have been using for several years Microsoft 7000 wireless ergonomic keyboard. Ergonomic keyboard 7000 Microsoft wireless driver install in Windows 7, 64 bit