by Ken Task.
Don't run Windows, but .... think there is something that might help as requirements for many things for Moodle 3.x-> seem to be a moving target these days ...
In your 2.7, Site Admin -> Server -> Environment ... update the component ... and then in the drop down pick list that allows you to choose what higher version to check, select Moodle 3.3. Supposedly, if there is anything you need to upgrade (like PHP) or change (like config changes to supported databases), moodle should warn. Go to the bottom of that output and see what it says.
'spirit of sharing', Ken