Please share this post to help others fix their Hotmail sync issues. Thanks!
Update: This is the official thread for this issue. If Hotmail has stopped syncing with your mobile device recently, click on the Me Too link and post a reply with your device information.
Update 2: Many people including myself have syncing restored after posting to the thread. If you have this issue, please post info about your device and email account to the thread so that Microsoft support can help you out.
A few years ago, wonderful thing happened: the Exchange ActiveSync (EAS) protocol that most mobile devices used to connect to Microsoft corporate email system, Microsoft Exchange, was adopted by Hotmail. All of a sudden, just about any mobile device or smartphone could synchronize not just email but also calendar events, contacts, and tasks with Hotmail. Then about a month ago, a very bad thing happened: Microsoft started breaking EAS for many mobile devices.