Microsoft has confirmed that this month's Patch Tuesday security updates will be delayed to March due to a last-minute bug.
Initially, Microsoft announced that it had decided to delay the release of Patch Tuesday due to undisclosed issues, and while some believed that all patches would be released next Tuesday, the company appears to have other plans. 
Microsoft will reportedly release all updates on the next Patch Tuesday which will take place on March 14th.
“We will release updates as part of the scheduled March update on Tuesday, March 14, 2017,” the company said today, without providing any other information about what went wrong.
“Our top priority is to provide the best possible experience for our 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 scheduled upgrade. After reviewing all options, we have made the decision to delay this month’s updates. We apologize for any inconvenience this change may cause,” Microsoft said in the initial announcement.
It should be noted that the delay of Patch Tuesday until March 2017 means that the company's systems will be vulnerable to the SMB vulnerability (zero-day) whose exploit has already been posted online.
According to US-CERT, the SMB flaw is already being exploited by cybercriminals, and there is no effective solution that provides 100 percent protection.
Without a patch from Microsoft, users will remain vulnerable for another month. Experts suggest blocking outbound SMB connections (on TCP ports 139 and 445 and UDP ports 137 and 138) from the local WAN as a temporary security measure.
