A window in a dream often reflects perspective -- how much you can see of a situation, or how visible you feel to others. A clear window can point to clarity or opportunity coming into view, while one that's broken or blocked may name a fear of being exposed before you're ready.
He that has too great a conceit of himself will be apt to fall into many errors in his judgement; yet on the other side, he that is too diffident, is not fit for this Science. - Cardan Girolamo (1501-1576)