The dream may symbolize a sense of returning to a previous job or situation in your life. The presence of a new, black colleague could represent a new perspective or aspect of yourself that you are working with. The struggle to find the linen closet may suggest a feeling of being lost or unsure in your current circumstances. The person who helps you find the closet could represent a guide or mentor in your waking life. The difficulty in finding the exit and the covered windows may symbolize a sense of being trapped or unable to see a clear path forward. This could reflect feelings of uncertainty or confusion in your current situation. Overall, the dream may be highlighting the need to navigate through both familiar and unfamiliar territory in order to find your way and move forward in your life.