outlook pst

Microsoft pushed an emergency, cumulative out-of-band update for Windows 11 version 23H2—KB5078132 (OS Build 22631.6495)—on January 24, 2026 to repair file‑access regressions and Outlook reliability problems introduced by the January 13, 2026 security rollup; the patch bundles prior January...

Microsoft’s January update roll-out has already cost IT teams a sleepless weekend and forced two emergency fixes inside a single fortnight — a chaotic start to Windows 11 patching in 2026 that raises fresh questions about testing, packaging, and communication for Microsoft’s flagship desktop OS...

Microsoft's January Patch Tuesday created more work for IT teams than it solved: within days of the January 13, 2026 cumulative update, users and administrators began reporting that Outlook — particularly classic Win32 profiles using local PST files stored in cloud‑synced folders — would hang...

Outlook crashing on Windows 11 after January’s Patch Tuesday left inboxes frozen, mailboxes mismatched, and IT teams scrambling — and Microsoft’s emergency out-of-band update finally appears to have stopped the worst of it. The fix targets a flaw introduced by the January 13, 2026 security...

Microsoft rushed a second out-of-band emergency patch in late January after its January Patch Tuesday rollout introduced a regression that left Outlook and other apps unable to reliably open or save files stored in cloud-synced locations such as OneDrive and Dropbox — the fix, published as...

Microsoft’s rapid, second out‑of‑band Windows 11 update in late January was more than a routine bugfix — it was a targeted emergency response to a regression that left Outlook and other applications unable to reliably open or save files stored in cloud‑synced folders such as OneDrive and...

Microsoft has pushed a second emergency out‑of‑band Windows update in January to undo a string of regressions introduced by its Patch Tuesday rollup — and this one should be on your radar if you use cloud‑backed storage, Outlook PST files, or manage fleets of Windows 11 PCs. The out‑of‑band...

Microsoft’s January update cycle has turned into an industry-sized headache: after the regular Patch Tuesday rollup on January 13 introduced several regressions, Microsoft pushed an initial emergency out‑of‑band (OOB) fix and then — within eleven days — shipped a second OOB cumulative to repair...

Microsoft pushed an emergency out‑of‑band update late last week to repair a regression introduced by its January security rollup that left Outlook and other programs unable to open or save files stored in cloud‑backed folders such as OneDrive and Dropbox. The fix — delivered as KB5078127 for...

Microsoft pushed out another out-of-band emergency update late this month to undo a painful regression that broke file I/O for cloud-backed locations — a bug that left Outlook hung, emails duplicated or missing, and administrators scrambling for fixes. Overview The sequence began with...

Microsoft has released an emergency Windows 11 update that finally addresses widespread application freezes and Outlook hangs that occurred when saving or opening files from cloud‑synced folders such as OneDrive and Dropbox — a regression introduced by the January 13, 2026 Patch Tuesday rollup...

Microsoft pushed a second emergency, out‑of‑band Windows update within seven days to undo a chain of regressions introduced by its January Patch Tuesday baseline, restoring cloud‑file I/O and classic Outlook stability while exposing persistent fragility in cumulative servicing and rollback...

Microsoft pushed an emergency, out‑of‑band Windows 11 update on January 24, 2026 to fix a serious compatibility regression that could cause Microsoft Outlook and other applications to hang or crash when opening or saving files stored inside cloud‑synced folders such as OneDrive — a problem that...

In a rare bit of good news for people who still want their Windows desktop to act like a local desktop, OneDrive’s Folder Backup (Known Folder Move) on Windows 11 has quietly gained a better undo flow — in some builds you can now stop folder backup and have OneDrive move your files back to the...

Microsoft’s emergency out‑of‑band update KB5078127 is a targeted, cumulative patch for Windows 11 that consolidates the mid‑January fixes and corrects a high‑impact file I/O regression that left Outlook and other apps hanging when they tried to open or save files in cloud‑synced folders such as...

Microsoft released an out‑of‑band cumulative update for Windows 11, version 23H2—KB5078132 (OS Build 22631.6495)—on January 24, 2026 to address a set of post‑Patch‑Tuesday regressions and to roll together prior January fixes into a single package for affected systems. The package is explicitly...

Microsoft has confirmed a fresh wave of regressions tied to the January Patch Day security updates: some applications may stop responding or report errors when opening or saving files stored in cloud-synced locations such as OneDrive or Dropbox, Outlook Classic profiles that store PSTs on...

Windows 11 users are again facing a fresh wave of patch-related breakage: a January 13, 2026 cumulative update (KB5074109) introduced a regression that can make apps unresponsive or fail when opening or saving files on cloud‑backed storage such as OneDrive and Dropbox — and the fallout has...