Our master bathroom's window has a crank attached to the window frame. The window is in good shape and the frame is too. My situation is that the crank doesn't operate the window to open or close.
Also, the surrounding area where the window is set is cold, like maybe the insulation is weak
All of what said I'm thinking a major operation of professional doing the job for me could I be right, I felt that once I open the crank window I would have access to the crank and its screws, and this would give an opportunity to remove the crank. But if te window crank cavity is worn out, I'd be up a creek for having opened up a pandora's box.