I spray silicon on a rag and wipe it around the entire rubber seal. After two applications staring last summer I have not had any window stick. And, yes, as others have stated, unlatch the large front and rear windows and open from the outside. Simple procedures that I suspect some don't follow preferring instead to fight it and bitch about it.
2014 25FB International Serenity, Blue OX Sway Pro,
2016 F350 4x4 Ultimate Lariat crew cab SRW, LWB, 6.7 PSD, 20" wheels, Ingot Silver Metallic, DiamondBack tonneau cover, TrailFX wheel-to-wheel step bars.