India, Jan. 27 -- Microsoft has pushed an emergency Windows 11 update after a January security patch quietly turned Outlook into a reliability nightmare for many users. What started as a routine Patch Tuesday release quickly snowballed into frozen inboxes, missing emails, and repeated crashes, especially for those using the Classic version of Outlook with PST files stored on cloud services such as OneDrive or Dropbox.

The recently released "out-of-band" update KB5078127 is available for all versions of Windows 11 25H2, Windows 11 23H2, and Windows 10, as it contains a combination of the several updates that Microsoft released over the last 2 weeks in response to the significant issues encountered by customers.

After that security update...