Patch Tuesday
The latest Patch Tuesday coverage — news, analysis, and updates from the WindowsNews.AI desk.
MiniPlasma Windows 11 Exploit Achieves SYSTEM Access via Cloud Files Driver Flaw
A public Windows 11 proof-of-concept exploit that hooks into the Cloud Files Mini Filter Driver was released on May 17, 2026 by a researcher operating under the handles Chaotic Eclipse and...
KB5089549 Fixes Windows 11 Explorer Freeze After Sign-In
Microsoft has released KB5089549, a cumulative update for Windows 11 versions 24H2 and 25H2, fixing a maddening bug that caused explorer.exe to freeze or crash immediately after sign-in, leaving the...
Windows 11 KB5089549 Update Fails at Reboot with 0x800f0922 Due to Small EFI Partition
Microsoft’s latest Patch Tuesday rollout for Windows 11 has hit a significant snag. Security update KB5089549, delivered on May 12, 2026, triggers an 0x800f0922 error and boot failure on devices...
Windows 11 KB5089549 Update Error 0x800f0922: EFI Partitions Under 10MB Block Installation
Microsoft acknowledged on May 15, 2026, that a recent Windows 11 security update is tripping up a surprising number of devices—not because of code bugs, but because of a storage allocation decision...
Microsoft Patches Windows 11 Notepad RCE via Malicious Markdown Links
Microsoft’s February 2026 Patch Tuesday rollout includes a fix for CVE-2026-20841, a high-severity remote code execution (RCE) vulnerability in Windows 11 Notepad. The flaw, discovered by...
Windows 11 May 2026 Patch Tuesday KB5089549 Fixes 137 Security Flaws
Microsoft rolled out the May 2026 Patch Tuesday updates on May 12, delivering Windows 11 cumulative update KB5089549 for versions 24H2 and 25H2. The release plugs 137 security holes across the...
KB5089549 EFI Space Error 0x800f0922 Blocks Windows 11 24H2/25H2 Patch
Microsoft has acknowledged a significant installation issue with its latest Patch Tuesday update for Windows 11, KB5089549, causing failures on systems with limited free space on the EFI System...
MiniPlasma PoC Questions Windows 11 KB5089549 Fix for CVE-2020-17103 EoP Vulnerability
A newly released proof-of-concept (PoC) dubbed MiniPlasma is resurrecting concerns over a four-year-old local privilege escalation bug in Microsoft's Cloud Files Mini Filter Driver. The PoC,...
Microsoft Ships WinRE Security Patches KB5089593 and KB5089591 for Windows 11 24H2, 25H2, 26H1
Microsoft has released Safe OS Dynamic Updates KB5089593 and KB5089591 for Windows 11, targeting the Windows Recovery Environment (WinRE) on May 12, 2026. The updates land on the same day as the...
Windows 11 WinRE Updates KB5089593 & KB5087594 Fix Critical Boot Security Gaps
Microsoft has rolled out KB5089593 and KB5087594, a pair of Safe OS Dynamic Updates targeting Windows 11’s recovery environment, on May 12, 2026. These updates arrive outside the usual Patch...
KB5089593 and KB5087594 patch WinRE across Windows 11 24H2, 25H2, 23H2, and 10 on May 12
Microsoft pushed out a fresh round of Safe OS Dynamic Updates on May 12, 2026, delivering critical patches for the Windows Recovery Environment (WinRE) across Windows 11 and 10. The rollout includes...
Windows 11 KB5089549 Update Fails or Slows Internet: Fix Now
Microsoft's latest Patch Tuesday release for Windows 11 is causing headaches for a subset of users who find the update either refuses to install or, paradoxically, slows their internet connection to...