If your home is new enough, and you have a good relationship with the sales lot, you can probably get a new window from them, otherwise, you pretty much stuck buying a window. Dual pane windows are sealed units. glass companies don't have the ability to remake the sealed unit unfortunately If it happens to be the part of the window that moves, you can just replace that piece without having to t3ar the window out of the wall, if you can find the same exact window that is
Here's to your independence,
Noah.