On February 14, Microsoft made the unusual move to delay its regular Patch Tuesday updates over a "last minute issue", and now it looks like those updates won't arrive until next month. In an update to its original TechNet post (via ZDNet), Microsoft says that February's updates will now be distributed as part of the next planned Patch Tuesday on March 14.

February's Patch Tuesday updates delayed until March 14

From Microsoft:

We will deliver updates as part of the planned March Update Tuesday, March 14, 2017.

Our top priority is to provide the best possible experience for customers in maintaining and protecting their systems. This month, we discovered a last minute issue that could impact some customers and was not resolved in time for our planned updates today.

After considering all options, we made the decision to delay this month's updates. We apologize for any inconvenience caused by this change to the existing plan.

Again, Microsoft hasn't provided a reason for the delay, but at least those impacted now have a firm date to plan for. Still, this is odd for an update schedule that has run like clockwork since it was introduced, and potentially leaves users exposed to bugs and exploits that would have otherwise been patched (including a particularly nasty SMB exploit).