Steelcase desk drawer stuck in unlocked position
There are anti tip mechanisms in steelcase desk drawers. 1.)Open center drawer all the way open. Looking under center drawer, far back on right &amp; left edge are metal square shapes sticking up -try lifting its insert up (like a guillotine blade). How it works is when drawer closed a pin goes through this and slides freely, if tipped the guillotine drops down and prevents pin from pulling out) So by manually disengaging (lifting square up) should unlock it. The key thing is getting center drawer pulled open enough to access area. I will try and get some photos added. 
I figured it out after the steelcase desk drawers were opening fine, then we moved desk on its side, upside down so could slide it on a blanket etc and afterwards had locked drawers :-( But figured it out.