Microsoft has now indicated that the promised upgrade to the new version of has been delayed from the end of summer 2016 to sometime in the first half of 2017.


The upgrade to the free web email service actually began in 2015 in a preview mode, but was supposed to begin its worldwide rollout in February 2016. Among other things, the new can set up automatic replies to emails, support side-by-side editing of Office documents and more. However, Microsoft added that in addition to new features and a revamped UI, the new was also being upgraded to a new infrastructure as well.

As it turns out, it looks like that infrastructure update is the reason for the latest delay. Windows Central reader Peter Halford sent over word that he tried to share his calendar and saw the following message pop up:

We're currently upgrading accounts. During the upgrade, you won't be able to share your calendar with some accounts, but you can still send a link to your calendar by clicking "Get a link". We expect the upgrade to be finished in the first half of 2017. We apologize for the inconvenience and thank you for using

So far, Microsoft has not revealed why it is taking so much longer to upgrade's infrastructure.

Thanks again to Peter for the tip!