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Microsoft has confirmed that a mouse personalization reset bug tied to the KB5120998 August 2026 preview update only affects non-English Windows 11 installations, after user reports flagged the issue on version 25H2 and 24H2 devices.
Microsoft has confirmed that the optional KB5120998 preview update stops some Windows 11 desktop settings from loading, leaving a solid black background that users cannot restore manually.
Microsoft has confirmed a known issue in which recent Microsoft Defender Antivirus updates trigger false "Microsoft Defender Antivirus is turned off" alerts in the Windows Security app, even though the antivirus is running normally. The bug affects all supported Windows client and server versions, including Windows 11 26H1 and Windows Server 2025, and a fix is still pending.
Microsoft has detailed TerminalFix, a ClickFix variant that lures victims via fake Cloudflare CAPTCHAs into running PowerShell commands in Windows Terminal, ultimately deploying a Python-based reverse-tunnel implant that gives attackers persistent network access.
Microsoft released the optional Windows 11 KB5120998 preview update for versions 24H2 and 25H2, bringing 35 changes, including a repositionable taskbar, resizable Start menu, and the phased rollout of Administrator Protection.
Microsoft's August 2026 Patch Tuesday addresses roughly 400 vulnerabilities, including 42 rated Critical and three zero-days. One, CVE-2026-68820, is already exploited in the wild and now sits in CISA's KEV catalog.
Microsoft disclosed CVE-2026-69550, an important-severity information disclosure flaw in the Remote Desktop Client used by Windows App for Mac. The out-of-bounds read bug lets an unauthorized network attacker access data, but Microsoft says exploitation is less likely and no active exploitation has been observed.
Microsoft has started testing a redesigned File Explorer and context menu in Windows 11 Insider preview builds, promising faster right-click performance, less clutter, and a new Settings page to control which commands and app extensions appear.
Microsoft patched more than a dozen vulnerabilities across Active Directory, Azure, Entra, SharePoint and Teams, including three CVSS 10/10 flaws. Apple fixed a single Screen Sharing authentication bypass (CVE-2026-65400) in macOS.
Microsoft is turning Windows settings backup and restore on by default for eligible managed devices, making a recoverable list of settings and Microsoft Store apps a baseline part of the Windows experience rather than an opt-in step. The feature is in preview for Windows Insiders now and becomes generally available with Windows 11, version 26H2.
CISA added Microsoft SharePoint Server flaw CVE-2026-45659 (CVSS 8.8) to its Known Exploited Vulnerabilities catalog, citing active exploitation and setting a July 4, 2026 remediation deadline for U.S. federal agencies.
Microsoft released KB5095093, the June 23, 2026 optional preview cumulative update for Windows 11, advancing systems to OS Builds 26200.8737 and 26100.8737. The non-security update fixes eight reliability defects including taskbar input failures, File Explorer refresh bugs, DirectX rendering crashes and Bluetooth audio disconnects, but ships with three known installation issues.
Microsoft released KB5093998 on June 11, 2026, a security update for Windows 11 23H2 patching 7 CVEs including an actively exploited kernel privilege escalation and a DirectX graphics RCE flaw.
Microsoft released KB5094127 on June 11, 2026, a security update for Windows 10 22H2 patching CVE-2026-0234 (kernel EoP), CVE-2026-0235 (RDP RCE), CVE-2026-0236 (graphics info disclosure), and CVE-2026-0237 (WebView2 bypass).
Microsoft released KB5094126 on June 9, 2026, a security update for Windows 11 versions 24H2 and 25H2 and Windows Server 2025. According to the update documentation, it fixes six vulnerabilities (CVE-2026-26001 through CVE-2026-26006) spanning the Windows Kernel, Edge WebView2, Graphics component, authentication, and Windows Shell, and raises builds to 26100.8655 (24H2) and 26200.8655 (25H2).
Microsoft's June 2026 security update KB5094125 patches five vulnerabilities in Windows Server 2025, including a critical unauthenticated Remote Desktop Services RCE (CVE-2026-0235) and a Hyper-V guest-to-host escape (CVE-2026-0237). The update raises the OS build to 26100.32995 and applies to all editions across full GUI and Server Core installations.
Microsoft released KB5094122, the June 2026 cumulative security update for Windows 10 Version 1607 and Windows Server 2016, addressing critical remote code execution and privilege escalation vulnerabilities. The update moves the build to 14393.9234 and fixes flaws in the Windows Kernel, CLFS Driver, Graphics Component and Print Spooler.
Microsoft released KB5094041 on June 9, 2026, the monthly rollup for Windows Server 2012 R2 ESU systems. It patches kernel security flaws, fixes TLS 1.3 compatibility, resolves WMI memory leaks, and improves AD replication stability.
