Microsoft Confirms Emergency Update For Millions Of Outlook Users
Microsoft issued emergency updates to fix Outlook crashes related to PST files stored on cloud services after January 2026 Patch Tuesday caused widespread application freezes.
- On Saturday, Microsoft released emergency out-of-band updates for Windows 10, Windows 11, and Windows Server to fix Microsoft Outlook failures with PSTs stored in cloud-backed storage, including prior January fixes.
- After installing updates released on or after January 13, 2026, some apps became unresponsive when opening or saving files in cloud-backed storage like OneDrive and Dropbox, Microsoft says.
- In some configurations, Outlook may hang and require termination or restart; affected users reported missing Sent Items and re-downloaded messages disrupting offline access with Microsoft Outlook PST files stored on OneDrive.
- Administrators should install the cumulative out-of-band update via Windows Update or the Microsoft Download Catalog, but if systems are unaffected, there is no need to update and they can wait for the preview update or next month's Patch Tuesday.
- This is the second out-of-band update since January's security patch, following a January 17, 2026 emission that fixed remote desktop and hibernation issues.
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Microsoft Windows 11 Emergency Update Fixes Outlook Crashes and Missing Emails After January Patch | 📲 LatestLY
Microsoft has released a new Windows 11 emergency update to resolve a serious issue that left millions of Outlook users facing freezes, failed restarts and missing emails after the January 2026 security updates. 📲 Microsoft Windows 11 Emergency Update Fixes Outlook Crashes and Missing Emails After January Patch.
Microsoft releases second out-of-band fix for Windows in a week
Outlook users have reported difficulties with Microsoft’s January Patch Tuesday updates, forcing Microsoft, once again, to patch some of its patches. Users reported that, after applying the January 13 Windows updates, some applications became unresponsive or encountered unexpected errors when opening files from or saving files to cloud-based storage such as OneDrive or Dropbox. In particular, certain Microsoft Outlook configurations with the PST…
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