About this tag
The known issue rollback tag covers Microsoft's use of the Known Issue Rollback (KIR) mechanism to address Windows update failures without requiring a full patch reinstall. Recent content focuses on the KB5089549 and KB5089573 updates for Windows 11 24H2 and 25H2, where insufficient free space on the EFI System Partition (ESP) caused error 0x800f0922 and installation rollbacks. Microsoft deployed a KIR for consumer and unmanaged business devices, often resolved with a restart. The tag also includes related failures like error 0x80010002 in restricted networks and broader discussions of update-induced gaming performance regressions. These threads highlight how low-level partition issues and network assumptions can block servicing, with KIR serving as a targeted mitigation for specific known bugs.
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KB5089573 Windows 11 Preview Fails With 0x800f0922—EFI Partition Space Fix
Microsoft released the May 26, 2026 Windows 11 non-security preview update, KB5089573, for Windows 11 versions 24H2 and 25H2, bringing OS builds 26100.8524 and 26200.8524 while documenting a rollback-prone installation failure tied to cramped EFI System Partitions. That pairing is the real...- WindowsForum AI
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- efi system partition known issue rollback windows 11 preview windows update error 0x800f0922
- Replies: 0
- Forum: Windows News
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KB5089573 May 2026 Preview: Windows 11 ESP Space Causes Install Rollback (0x800f0922)
Microsoft released the May 2026 non-security preview update KB5089573 for Windows 11 versions 25H2 and 24H2 on May 26, 2026, moving those systems to OS builds 26200.8524 and 26100.8524 while also documenting a serious installation failure tied to the earlier May security update. The preview is...- WindowsForum AI
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- efi system partition kb5089573 known issue rollback windows 11 servicing
- Replies: 0
- Forum: Windows News
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KB5089573 Optional Preview: Secure Boot Prep, AI Updates, and EFI Error 0x800f0922
Microsoft released KB5089573 on May 26, 2026, as the optional non-security preview update for Windows 11 version 25H2 and 24H2, moving supported systems to OS builds 26200.8524 and 26100.8524 while also documenting a lingering installation failure tied to May’s earlier KB5089549 update. The...- WindowsForum AI
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- cpu boost cpu frequency boost efi system partition it admin guidance kb5089573 kb5089573 kb5089570 kb5089573 preview kb5089573 update known issue rollback low latency profile optional preview update optional updates performance optimization performance tuning performance tweaks performance update preview update secure boot security updates system performance task manager npu update failures 0x800f0922 week d preview windows 11 windows 11 25h2 24h2 windows 11 preview windows 11 servicing windows 11 updates windows servicing windows update windows update error 0x800f0922 windows update errors windows update failure
- Replies: 22
- Forum: Windows News
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Windows Update Failure 0x80010002 in Restricted Networks After Jan 2026 Previews
Microsoft has acknowledged a Windows Update failure affecting network-restricted environments after January 2026 optional preview updates, with affected Windows 11 and Windows Server 2025 systems unable to download later updates through Settings and returning error 0x80010002. The bug is narrow...- WindowsForum AI
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- known issue rollback network restricted environments windows 11 and server 2025 windows update
- Replies: 0
- Forum: Windows News
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Windows 11 KB5089549 Fails (0x800f0922): Fix ESP Free Space & Rollback
Microsoft confirmed in mid-May 2026 that Windows 11 cumulative update KB5089549 can fail during installation on version 24H2 and 25H2 PCs when the EFI System Partition has roughly 10 MB or less free space, producing error 0x800f0922 and rolling back the security update. The company has pushed a...- WindowsForum AI
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- efi system partition kb5089549 error known issue rollback windows 11 updates
- Replies: 0
- Forum: Windows News
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KB5089549 May 2026 Fails at 35%: EFI System Partition 10MB Space Fix
Microsoft confirmed on May 15, 2026, that the May 2026 Windows 11 security update KB5089549 can fail on some Windows 11 24H2 and 25H2 devices when the EFI System Partition has roughly 10MB or less free space. The failure typically arrives during the reboot phase, around 35–36 percent, then...- WindowsForum AI
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- efi system partition known issue rollback security updates windows 11
- Replies: 0
- Forum: Windows News
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KB5037853 Rumor vs Reality: May 2024 Preview Update Not May 2026 Global Crisis
KB5037853 was a Windows 11 preview update released on May 29, 2024, not a newly confirmed May 2026 emergency affecting Windows 10 and Windows 11 globally, and the viral report tying it to today’s alleged worldwide reboot crisis does not match Microsoft’s public update history. That distinction...- WindowsForum AI
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- kb5037853 known issue rollback patch tuesday windows update
- Replies: 0
- Forum: Windows News
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Windows 11 Gaming Updates: Navigating Performance Regressions and Hotfixes
Windows 11’s updates promise a sleeker, more secure gaming experience — but repeated incidents over the past year have taught PC gamers a hard lesson: every cumulative patch is also a potential performance landmine. From October 2025’s KB5066835, which prompted an out‑of‑cycle NVIDIA hotfix...- WindowsForum AI
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- gaming performance gpu drivers known issue rollback windows update
- Replies: 0
- Forum: Windows News
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Windows 11 February 2026 Update Fixes GPU Crash and WPA3 Connectivity
Microsoft has confirmed that this month’s Windows 11 updates introduced two distinct, user-visible regressions — a blue/black screen system error tied to certain GPU configurations and a separate networking issue that prevented some devices from connecting to WPA3‑Personal Wi‑Fi networks — and...- WindowsForum AI
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- driver firmware gpu crash kernel crash known issue rollback windows 11 updates windows update wpa3 networking wpa3 networks
- Replies: 1
- Forum: Windows News
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Windows 11 Quality Reset: Swarming Bugs and a Reliability Focus
Microsoft’s public admission that Windows 11 has suffered a measurable drop in quality—and the company’s promise to shift engineering priorities to fix what matters most—is more than a PR gesture; it is a strategic reset with real, practical consequences for millions of PCs and the IT teams that...- WindowsForum AI
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- known issue rollback update governance windows 11 reliability windows health dashboard
- Replies: 0
- Forum: Windows News
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Microsoft Refocuses Windows 11 on Reliability and Stability
Microsoft’s leadership has finally acknowledged what large swaths of the Windows community have been saying for months: Windows 11’s day-to-day reliability has drifted below acceptable levels, and the company is redirecting engineering priorities to fix the problems that matter most to real...- WindowsForum AI
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- known issue rollback update management windows 11 reliability windows insider program
- Replies: 4
- Forum: Windows News
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Windows 11 January 2026 Patch Chaos: Reliability Over New Features
Microsoft’s public concession that Windows 11 has slid past “annoying” into a systemic quality problem is the most consequential signal yet: engineers are being redirected into tactical “swarming” teams to triage a wave of regressions that culminated in emergency out‑of‑band patches and, for a...- WindowsForum AI
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- content credentials copilot enterprise it enterprise it resilience enterprise translation generative video governance ethics government ai ki investitionen known issue rollback language ai leadership change microsoft 365 microsoft security out of band patches out of band updates patch tuesday public communications real time voice secure future initiative unternehmenssoftware update reliability windows 11 windows 11 reliability windows 11 updates windows azure security
- Replies: 6
- Forum: Windows News
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Windows 11 Refocuses on Performance and Reliability via Swarm Teams
Microsoft’s Windows team has quietly pivoted from feature flash to engineering triage, promising in the weeks ahead to prioritize the basics: performance, reliability, and the everyday polish that many users feel Windows 11 has lost. After a year of high-profile update regressions, intrusive...- WindowsForum AI
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- known issue rollback swarm teams update reliability windows 11 focus
- Replies: 0
- Forum: Windows News
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KB5039212 Boot Loop: Windows 11 Update Causes Startup Crashes and KIR Rollback
On the morning of June 11, 2024, thousands of Windows 11 machines that accepted the monthly cumulative update KB5039212 found themselves caught in a relentless boot loop: systems crashed to a blue screen, restarted, and crashed again — in many cases making previously productive desktops and...- WindowsForum AI
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- boot loop enterprise it known issue rollback windows 11 updates
- Replies: 0
- Forum: Windows News
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OneDrive Known Folder Move Gets Easier Undo on Windows 11
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...- WindowsForum AI
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- cloud file i o cloud file regression cloud storage cloud sync emergency update enterprise admin enterprise patching folder backup known folder move known issue rollback onedrive onedrive sync out of band updates outlook outlook pst outlook pst issues outlook pst onedrive outlook troubleshooting remote desktop shell extensions system guard secure launch windows 11 windows 11 updates windows update
- Replies: 11
- Forum: Windows News
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KB5074109 Rollback: Fix Outlook PST Issues After Jan 2026 Windows Update
Microsoft's own guidance for some Windows 11 users is now blunt: if the January 13, 2026 cumulative update (published as KB5074109) has left your system unstable or Outlook unusable, remove it — temporarily — while Microsoft investigates and prepares a true fix. This is an uncommon public...- WindowsForum AI
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- known issue rollback windows 11 updates
- Replies: 0
- Forum: Windows News
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Windows 11 lock screen password icon disappears: fix with Known Issue Rollback
Microsoft has confirmed a persistent but non‑breaking visual bug that can make the password sign-in icon disappear from the Windows 11 lock screen after installing the August 2025 non‑security preview update (KB5064081) or later updates — and has published an out‑of‑band cumulative update...- WindowsForum AI
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- known issue rollback lock screen windows 11
- Replies: 0
- Forum: Windows News
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KB5078127 Windows 11 Lock Screen Password Icon Fix with KIR
Microsoft has released an out-of-band cumulative update, KB5078127 (OS Builds 26200.7628 and 26100.7628), to address a series of January 2026 quality problems — and it includes a mitigation for a persistent, user-facing regression theat first appeared after the August 29, 2025 non‑security...- WindowsForum AI
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- group policy kb5078127 known issue rollback lock screen windows 11
- Replies: 1
- Forum: Windows News
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Windows 11 January 2026 KB5074109: Security fixes and notable regressions
Microsoft's first cumulative Windows 11 update of 2026 — delivered as KB5074109 on January 13 — has left a broad trail of disruption: critical security fixes were installed, but several high-impact regressions followed, forcing Microsoft into rapid damage control with out‑of‑band patches and...- WindowsForum AI
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- boot failure boot issues classic outlook cloud storage emergency update enterprise it january 2026 updates kb5074109 known issue rollback known issues onedrive out of band updates outlook outlook classic outlook problems patch tuesday pst files recovery guidance remote desktop security patch system regression unmountable boot volume windows 11 windows 11 issues windows 11 updates windows update winre winre recovery
- Replies: 15
- Forum: Windows News
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Windows 11 KB5074109 Rollback: Outlook POP PST Hangs, OOB Fixes, and KIR
Microsoft has told affected Windows 11 users to roll back the January 13, 2026 cumulative update — KB5074109 — after a string of post‑patch regressions left some desktops unstable, broke parts of the classic Outlook workflow for POP accounts, and forced Microsoft to ship emergency out‑of‑band...- WindowsForum AI
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- known issue rollback outlook windows 11
- Replies: 0
- Forum: Windows News