The End User License Agreement allows Garmin MapSource software to be installed on only one computer at any one given point in time per licensed copy. This applies to the CD\DVD, Onetime Update, and Lifetime Update versions of the Garmin MapSource mapping.
In situations where the computer crashes or a new computer is purchased we do allow the MapSource software products to be installed on a different computer as long as MapSource product is uninstalled or cannot be used on the previous computer. If the MapSource product needs to be installed on more than one computer then a different license is needed for each computer. Additional licenses can be obtained from additional preloaded Garmin devices with a Onetime or Lifetime Update where the updated maps are currently not installed on a computer or by purchasing additional full version CD\DVD copies for Garmin devices that did not come pre-loaded with the maps1.
After the MapSource software has been installed on one computer, it is required to go through the Unlock Wizard on the new computer to unlock it. To unlock the MapSource software on a new computer:
The MapSource software will now be unlocked on the new computer.
1 For Garmin devices that are pre-loaded with maps it is recommended to have the maps installed on the computer where they will be used the most. On the other computers download and install BaseCamp. BaseCamp has the ability to read the pre-loaded maps so they can be used on the computer.
BaseCamp for Windows:
BaseCamp for Mac: