you have to open close them,- or restart max. For example if the material editor is gone hit twice m to make it invisible and visible with the new position- should work
Another way to solve this: When you are renaming 3dsmax.ini you will also loose all your other custom settings like user pathes, render options, etc... To avoid this, make a backup of 3dsmax.ini and then start to edit the original 3dsmax.ini with notepad, wordpad, ... Each window positions and sizes are stored in the ini…