Microsoft on Tuesday postponed the retirement of the security bulletins that for nearly two decades have described in detail the month’s slate of vulnerabilities and accompanying patches.

The bulletins’ last stand was originally scheduled for January, with a replacement process ready to step in Feb. 14. Rather than a set of bulletins, Microsoft was to provide a searchable database of support documents dubbed the “Security Updates Guide” or SUG.

But just hours before February’s security updates were to be released, Microsoft announced that it was postponing the entire collection to March 14, citing “a last-minute issue” that might impact some customers. The Redmond, Wash. company never spelled out exactly what led it to decide on the unprecedented delay.

With last month’s postponement, users expected that the no-more-bulletins rule would go into effect today. Not so.