Searching for I can not get the window out of the trac

Sometimes, it just takes a little bit of "general persuasion" to angle the window out. The pivot shoes will be locked in place and will only move with a bit of force. However, if you want some specific advice, take a photo of your window when it is tilted open so that we can see the problem you're having. There may be something we need to see to advise on.