Emergency patch #2 fixes Outlook, breaks lock screen

The second emergency patch in seven days. Computing.co.uk made that their headline. KB5078127 finally fixed the cloud file I/O hangs that were freezing Outlook and any app that touched OneDrive or Dropbox. In exchange, it introduced a new bug: the password icon vanished from the lock screen sign-in options. A cosmetic bug, sure, but a fitting symbol — Microsoft’s emergency fix to restore functionality removed the icon that represents authentication. The UNMOUNTABLE_BOOT_VOLUME issue — the most severe problem from KB5074109, the one bricking PCs entirely — remained unfixed through both emergency patches. That wouldn’t be addressed for another 17 days, when February’s Patch Tuesday arrived with its own fresh set of catastrophes.