Do you really need Global Mapper v2010? The free and open-source QGIS (version 3.34 and up) now surpasses v2010 in every metric. QGIS handles 64-bit processing, LiDAR, and thousands of raster formats better than Global Mapper did in 2010. It costs nothing and runs on modern Windows x64.
(often labeled as version 12 internally) marked a significant milestone for Windows users. The introduction of the x64 (64-bit) build was a game-changer. Prior to this, 32-bit versions were limited to 2–3 GB of RAM. The v2010 x64 release allowed users to access massive amounts of system memory, enabling: blue marble global mapper v2010 x64 link
If you are new to the software, Blue Marble usually offers a two-week evaluation period to test the full functionality. ⚠️ Security Warning Do you really need Global Mapper v2010
Are you looking to to the newest version (Global Mapper Pro) or do you specifically need v20 for compatibility? It costs nothing and runs on modern Windows x64