The official answer is that we haven't tested MapInfo Pro 12.5 on Windows 10.
The only 32 bit version of MapInfo Pro that has been tested on Windows 10, is MapInfo Pro 15.0.1.
The later 64 bit versions of MapInfo Pro have also been tested on Windows 10.
Now this doesn't mean that MapInfo Pro 12.5 doesn't work on Windows 10. We are just saying that is hasn't been tested. I haven't checked if we support cases for MapInfo Pro 12.5 in relation to Windows 10.