HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MapInfo\MapInfo\Professional\1200 Understanding MapInfo 12.0 Licensing
For a complete reinstall, ensure to back up and delete the old licensing folder: C:\Program Data\FLEXnet (files starting with "unisw20"). Troubleshooting MapInfo Professional Licensing and Activation mapinfo professional 12.0 serial number access code
Often used for virtual environments or limited network access. mapinfo professional 12.0 serial number access code