Originally Posted by Blackhat6mike
Don't know your brand of windows, but if I close mine too tight for too long, they stick to the seals and don't want to open. I make sure I apply a coat of silicon lube to the seals at least once a year and don't close them as tight. Works for me.
You might want to turn your window openers as far in the open direction as you can without damaging them, then let them sit awhile, maybe a day, then apply more opening pressure. Sooner or later they will pop open. Been there, done that.
Thank you for your reply. My windows have the thumb tab things that have to be pushed outward to open. I tried spraying silicone on the side tracks to no avail. Someone told me the frame screws might be over torqued so when it gets a little warmer I will try loosening one window a little to see if that does the trick. Thank you for your reply