Handyman
Why is my window stuck or hard to open?
What’s likely going on
Paint sealing the window shut, swollen wood from humidity, or a buildup of dirt and debris in the track are the usual causes — none of them mean anything is broken, just that the window needs some real attention.
Is this a DIY job or worth calling someone?
Cleaning the track and gently scoring along a painted seam with a utility knife is a reasonable DIY step. A window that's warped enough that it won't sit flush anymore is a bigger job worth having someone assess.
Not sure, or ready to have someone take care of it?