Open regedit and navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\MapInfo\MapInfo\Professional\1050 .
If MapInfo Professional 10.5 is already installed on your computer, you can view your licensing information through these methods: : Open MapInfo Professional. Navigate to Help > About this MapInfo Product .
If you have already installed the software and need to retrieve your serial number or access code, you can find them using the following methods: Software Interface: In MapInfo Pro 10.5, go to the menu and select About this MapInfo Product