A new error message inside the calendar feature of Outlook.com states that the upgrade will not be completed until the first half of 2017 which means they will miss the summer deadline.
Recent Outlook.com Stories
Have you noticed a rise in the spam email getting into your Outlook.com account? If so, you are not alone.
Microsoft announced new adds-in from Boomerang, Evernote, PayPal and Uber that will work across Outlook, Outlook on the web, and, soon, Outlook.com too.
A key Microsoft platform differentiator was silently killed by one of the software giant's biggest partners this week, as Facebook discontinued support for a key API.
The busy beavers at Skype have been busier than usual this week, shipping updates to the communications service on Mac, iPhone, Outlook.com and Windows desktop.