milgard window lock
 

I have a lock that sticks on a small bathroom Milgard window. I have tried to lubricate, but still stuck. Any suggestions?

It's the lock mechanism; in the middle of the latch there is a tab, it catches on the lock mounted to the fixed window. Simple solution would be to remove the sliding glass and file down the protruding tab on the fixed window.

Their warranty service is pretty good. they would probably send you a new one if you call.