I have an old XP install running that I finally have time to upgrade. It is running XP 6.2 and I’m wondering if it would be fine to upgrade directly to 6.6 or if I have to go through all the other versions between the two?
Going from 6.2 to 6.4 in the first step is probably a good start. By making a stop on 6.4 and seeing that things work correctly, you can verify that the changes so far, since they are quite extensive.