Well, no details required as it seems many, many others are having this same issue. My Steel HR just died on my wrist this morning. Thanks to all for posting the solution. I'l give it a shot and see what happens. Looks like there's no reason to contact Support as they seem unknowledgable about the problem, based on all of your comments. I just wanted to add my watch's failure in here, on the off chance that Withings engineers will pay attention... Hey, it could happen!