You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
patch tuesday regression
About this tag
The patch tuesday regression tag on WindowsForum.com covers discussions about issues introduced by Microsoft's monthly security updates, particularly the January 2026 Patch Tuesday rollup. Recent threads focus on Windows 11 23H2 KB5078132, an out-of-band update released to fix regressions in cloud storage and Outlook PST file handling. Users and moderators analyze the specific problems caused by the original Patch Tuesday update, such as file I/O errors and Outlook crashes, and discuss how the OOB fix resolves them. The tag is relevant for IT professionals and advanced users tracking post-update stability and seeking workarounds or official fixes for regression bugs in Windows 11.
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...
cloud file i o
cloud storage
cloud sync
cloud synchronization
emergency out of band
emergency update
enterprise it
kb5078127
one drive pst issues
onedrive
oob update
outlook
outlook classic hang
outlook hangs
outlook issues
outlook pst
outlook pst hangs
outlook stability
patchtuesdaypatchtuesdayregression
pst files
update regressions
windows 11
windows 11 23h2
windows 11 updates
windows eleven updates
windows update