Cybersecurity articles tagged #Windows 11 on RuntimeRebel.https://runtimerebel.comhttps://runtimerebel.com/blog/microsoft-removes-wmic-tool-in-windows-11-to-curb-living-off-the-land-tacticshttps://runtimerebel.com/blog/microsoft-removes-wmic-tool-in-windows-11-to-curb-living-off-the-land-tacticsMicrosoft removes the legacy WMIC tool from Windows 11 builds to disrupt living-off-the-land techniques used by ransomware and malware.Tue, 18 Aug 2026 08:25:06 GMTMicrosoftWindows 11RansomwareMalwareLiving-off-the-Landhttps://runtimerebel.com/blog/bypassing-windows-administrator-protection-security-researchhttps://runtimerebel.com/blog/bypassing-windows-administrator-protection-security-researchAnalysis of Windows 11 25H2 Administrator Protection, detailing security research into UAC flaws and local privilege escalation vectors.Sat, 08 Aug 2026 01:01:29 GMTWindows 11Privilege EscalationZero-DayMalwarehttps://runtimerebel.com/blog/windows-11-kb5101684-preview-update-addresses-42-system-issueshttps://runtimerebel.com/blog/windows-11-kb5101684-preview-update-addresses-42-system-issuesMicrosoft releases KB5101684 preview cumulative update for Windows 11 24H2 and 25H2, fixing 42 bugs across Start menu, Task Manager, and Sandbox environments.Wed, 29 Jul 2026 14:13:43 GMTWindows 11KB5101684Microsoft Patch24H225H2https://runtimerebel.com/blog/kb5121767-microsoft-fixes-windows-11-dell-pc-shutdown-bughttps://runtimerebel.com/blog/kb5121767-microsoft-fixes-windows-11-dell-pc-shutdown-bugMicrosoft issues emergency out-of-band update KB5121767 to resolve critical system shutdown issues affecting Dell PCs running the July 2026 Windows 11 update.Mon, 20 Jul 2026 10:56:50 GMTWindows 11DellKB5121767Microsoft PatchSystem Stabilityhttps://runtimerebel.com/blog/windows-11-compatibility-hold-for-dell-devices-mitigation-guidehttps://runtimerebel.com/blog/windows-11-compatibility-hold-for-dell-devices-mitigation-guideMicrosoft blocks October 2024 Windows 11 updates for specific Dell hardware due to kernel-level conflicts causing spontaneous shutdowns and performance loss.Wed, 15 Jul 2026 10:06:06 GMTMicrosoftDellWindows 11StabilityPatch Managementhttps://runtimerebel.com/blog/microsoft-introduces-windows-11-cloud-rebuild-recovery-featurehttps://runtimerebel.com/blog/microsoft-introduces-windows-11-cloud-rebuild-recovery-featureMicrosoft is testing the new Cloud Rebuild recovery feature for Windows 11 Insider Preview, offering a streamlined, cloud-based OS reinstallation option.Tue, 07 Jul 2026 07:47:07 GMTWindows 11Cloud RebuildSystem RecoveryMicrosoftInsider Previewhttps://runtimerebel.com/blog/windows-11-emoji-panel-gif-fix-highlights-supply-chain-dependencyhttps://runtimerebel.com/blog/windows-11-emoji-panel-gif-fix-highlights-supply-chain-dependencyMicrosoft resolves Windows 11 Emoji Panel GIF functionality after provider shutdown, underscoring third-party service dependencies in OS features.Wed, 01 Jul 2026 13:05:33 GMTWindows 11Emoji PanelGIFMicrosoftService DisruptionSupply Chain Dependencyhttps://runtimerebel.com/blog/windows-11-kb5095093-new-point-in-time-restore-and-bug-fixeshttps://runtimerebel.com/blog/windows-11-kb5095093-new-point-in-time-restore-and-bug-fixesMicrosoft releases KB5095093 for Windows 11 24H2, introducing a critical Point-in-Time restore feature and addressing multiple system-level bugs.Tue, 23 Jun 2026 20:55:27 GMTWindows 11Kb5095093Microsoft UpdateDisaster Recovery24H2https://runtimerebel.com/blog/windows-11-kb5089573-performance-and-reliability-fixes-for-24h2-25h2https://runtimerebel.com/blog/windows-11-kb5089573-performance-and-reliability-fixes-for-24h2-25h2Microsoft releases KB5089573 preview for Windows 11 24H2 and 25H2, addressing Task Manager bugs, ReFS performance issues, and Sandbox stability errors.Wed, 27 May 2026 09:17:12 GMTWindows 11KB508957324H2ReFSMicrosofthttps://runtimerebel.com/blog/microsoft-s-2026-plan-enhancing-windows-11-driver-quality-and-securityhttps://runtimerebel.com/blog/microsoft-s-2026-plan-enhancing-windows-11-driver-quality-and-securityMicrosoft outlines plans for 2026 to significantly enhance Windows 11 driver quality, aiming to bolster system stability and security from the core up.Tue, 19 May 2026 17:03:59 GMTWindows 11Driver QualityMicrosoftOperating System SecurityHardware Securityhttps://runtimerebel.com/blog/yellowkey-bypassing-windows-11-bitlocker-tpm-protectionshttps://runtimerebel.com/blog/yellowkey-bypassing-windows-11-bitlocker-tpm-protectionsTechnical analysis of YellowKey, a zero-day exploit bypassing Windows 11 BitLocker. Learn how physical access allows attackers to extract encryption keys.Mon, 18 May 2026 13:25:12 GMTBitLockerWindows 11Tpm BypassYellowKeyPhysical Securityhttps://runtimerebel.com/blog/windows-11-resizable-taskbar-and-start-menu-preview-analysishttps://runtimerebel.com/blog/windows-11-resizable-taskbar-and-start-menu-preview-analysisMicrosoft initiates testing for resizable taskbar and Start menu features in Windows 11 Insider builds, addressing long-standing UI customization requests.Mon, 18 May 2026 13:23:56 GMTWindows 11Microsoft InsiderUi CustomizationDesktop UxIt Administrationhttps://runtimerebel.com/blog/windows-11-kb5089549-security-update-installation-failure-analysishttps://runtimerebel.com/blog/windows-11-kb5089549-security-update-installation-failure-analysisMicrosoft confirms Windows 11 KB5089549 security update fails with error 0x800f0922. Learn how to troubleshoot and resolve these installation issues.Mon, 18 May 2026 09:19:57 GMTWindows 11KB5089549Microsoft Update0x800f0922Security Patcheshttps://runtimerebel.com/blog/pwn2own-berlin-2026-critical-rce-and-escalation-targets-identifiedhttps://runtimerebel.com/blog/pwn2own-berlin-2026-critical-rce-and-escalation-targets-identifiedSecurity researchers demonstrate critical zero-day exploits against Windows, VMware, and AI systems at Pwn2Own Berlin 2026, earning over $1.3 million.Mon, 18 May 2026 05:29:00 GMTPwn2Own Berlin 2026Zero-DayVMwareWindows 11AI SecurityNVIDIAhttps://runtimerebel.com/blog/pwn2own-berlin-microsoft-exchange-windows-11-zero-day-exploitshttps://runtimerebel.com/blog/pwn2own-berlin-microsoft-exchange-windows-11-zero-day-exploitsZero-day vulnerabilities in Microsoft Exchange, Windows 11, and Red Hat Enterprise Linux demonstrated at Pwn2Own Berlin. Runtime Rebel details the impact.Fri, 15 May 2026 20:31:42 GMTPwn2ownZero-DayMicrosoft ExchangeWindows 11Red Hat Enterprise LinuxExploitationhttps://runtimerebel.com/blog/malicious-windows-11-isos-deliver-vidar-infostealer-analysishttps://runtimerebel.com/blog/malicious-windows-11-isos-deliver-vidar-infostealer-analysisSecurity researchers warn of fake Windows 11 ISO installers delivering Vidar and RedLine infostealers through sophisticated DLL side-loading techniques.Tue, 12 May 2026 05:19:19 GMTVidar StealerWindows 11Iso MalwareDLL Side LoadingInfostealerhttps://runtimerebel.com/blog/windows-11-modern-run-dialog-technical-overview-and-security-analysishttps://runtimerebel.com/blog/windows-11-modern-run-dialog-technical-overview-and-security-analysisMicrosoft updates the Windows 11 Run dialog in Insider Preview Build 27793 with WinUI 3 components, Dark Mode, and improved performance for OS interactions.Sat, 02 May 2026 00:48:36 GMTWindows 11Insider PreviewWinui 3Build 27793Os Hardeninghttps://runtimerebel.com/blog/windows-11-24h2-remote-desktop-security-warning-bug-patchedhttps://runtimerebel.com/blog/windows-11-24h2-remote-desktop-security-warning-bug-patchedMicrosoft resolves a Windows 11 24H2 bug where Remote Desktop (.rdp) security warnings failed to display correctly after the October 2024 updates.Fri, 01 May 2026 16:26:42 GMTWindows 11Remote DesktopKB5046617RDPMicrosofthttps://runtimerebel.com/blog/kb5083631-update-windows-11-batch-file-and-startup-performancehttps://runtimerebel.com/blog/kb5083631-update-windows-11-batch-file-and-startup-performanceMicrosoft releases KB5083631 for Windows 11, introducing batch file security enhancements, Xbox Game Bar updates, and optimizations for startup applications.Fri, 01 May 2026 12:28:53 GMTKB5083631Windows 11MicrosoftBatch File SecurityPerformance Optimizationhttps://runtimerebel.com/blog/managed-windows-11-bloatware-removal-new-it-admin-policy-controlshttps://runtimerebel.com/blog/managed-windows-11-bloatware-removal-new-it-admin-policy-controlsMicrosoft updates Windows 11 policy allowing IT admins to selectively uninstall pre-installed Store apps, reducing the attack surface in managed environments.Fri, 01 May 2026 12:28:31 GMTWindows 11Microsoft IntuneAttack Surface ReductionMDM PolicyEndpoint Securityhttps://runtimerebel.com/blog/microsoft-rdp-security-warning-display-bug-mitigation-guidehttps://runtimerebel.com/blog/microsoft-rdp-security-warning-display-bug-mitigation-guideMicrosoft confirms security warnings for Remote Desktop (.rdp) files may display incorrectly on Windows 10 and 11, potentially obscuring risk information.Tue, 28 Apr 2026 12:44:49 GMTMicrosoftRemote DesktopRDPWindows 11Security WarningsKB5044284KB5044285https://runtimerebel.com/blog/microsoft-revamps-windows-insider-program-for-windows-11-testinghttps://runtimerebel.com/blog/microsoft-revamps-windows-insider-program-for-windows-11-testingMicrosoft's Windows Insider Program overhaul introduces new Canary and Dev channels, changing how security teams test Windows 11 reliability and performance.Sat, 25 Apr 2026 20:16:42 GMTWindows 11Microsoft InsiderEndpoint ManagementOperating System Securityhttps://runtimerebel.com/blog/microsoft-enterprise-copilot-new-uninstall-policy-for-adminshttps://runtimerebel.com/blog/microsoft-enterprise-copilot-new-uninstall-policy-for-adminsMicrosoft introduces a new policy setting allowing IT administrators to uninstall Copilot from enterprise devices, enhancing management and control over AI features.Fri, 24 Apr 2026 12:33:47 GMTMicrosoft CopilotEnterprise ManagementPolicy SettingAI AssistantDevice ManagementWindows 10Windows 11Group PolicyIntunehttps://runtimerebel.com/blog/microsoft-teams-efficiency-mode-optimizing-resource-usage-for-pcshttps://runtimerebel.com/blog/microsoft-teams-efficiency-mode-optimizing-resource-usage-for-pcsMicrosoft introduces Efficiency Mode for Teams to reduce CPU and memory consumption on resource-constrained devices, improving overall system responsiveness.Wed, 22 Apr 2026 12:31:39 GMTMicrosoft TeamsWindows 11Performance OptimizationEndpoint Securityhttps://runtimerebel.com/blog/windows-hardening-new-protections-for-malicious-rdp-fileshttps://runtimerebel.com/blog/windows-hardening-new-protections-for-malicious-rdp-filesMicrosoft introduces enhanced security measures for Windows to mitigate risks from malicious .rdp files used in credential harvesting and data exfiltration.Wed, 15 Apr 2026 00:44:57 GMTRDP SecurityWindows 11Phishing MitigationMidnight BlizzardEndpoint Hardeninghttps://runtimerebel.com/blog/windows-11-23h2-start-menu-search-fix-microsoft-implementation-guidehttps://runtimerebel.com/blog/windows-11-23h2-start-menu-search-fix-microsoft-implementation-guideMicrosoft has resolved a Windows 11 23H2 bug causing Start Menu search failures using a Known Issue Rollback. Discover how this fix impacts system stability.Wed, 08 Apr 2026 08:33:27 GMTWindows 11Microsoft UpdateKnown Issue RollbackStart Menu FixEnterprise IThttps://runtimerebel.com/blog/windows-11-version-24h2-force-upgrade-for-unmanaged-pcshttps://runtimerebel.com/blog/windows-11-version-24h2-force-upgrade-for-unmanaged-pcsMicrosoft initiates forced upgrades to Windows 11 24H2 for unmanaged Home and Pro devices to maintain security support and critical update delivery.Fri, 03 Apr 2026 08:23:19 GMTWindows 11Microsoft ServicingEndpoint SecurityPatch Managementhttps://runtimerebel.com/blog/windows-11-kb5086672-emergency-update-fixes-installation-issueshttps://runtimerebel.com/blog/windows-11-kb5086672-emergency-update-fixes-installation-issuesMicrosoft issues emergency update KB5086672 to resolve installation failures and boot loops caused by the KB5079391 non-security preview update.Wed, 01 Apr 2026 08:39:18 GMTWindows 11KB5086672KB5079391Microsoft PatchingPatch Managementhttps://runtimerebel.com/blog/kb5079473-update-breaks-microsoft-account-sign-ins-on-windows-11https://runtimerebel.com/blog/kb5079473-update-breaks-microsoft-account-sign-ins-on-windows-11Microsoft confirms the KB5079473 March update for Windows 11 disrupts sign-ins for Teams and OneDrive. Technical analysis and remediation for affected systems.Fri, 20 Mar 2026 08:18:16 GMTKB5079473Windows 11Microsoft TeamsAuthenticationOneDrivehttps://runtimerebel.com/blog/windows-11-24h2-rras-rce-microsoft-issues-oob-hotpatch-fixhttps://runtimerebel.com/blog/windows-11-24h2-rras-rce-microsoft-issues-oob-hotpatch-fixMicrosoft releases an out-of-band hotpatch for Windows 11 24H2 to address critical RRAS remote code execution vulnerabilities CVE-2024-43513 and CVE-2024-49053.Sun, 15 Mar 2026 00:40:05 GMTCVE-2024-43513CVE-2024-49053Windows 11RRASMicrosofthttps://runtimerebel.com/blog/windows-11-c-drive-access-failure-on-samsung-pcs-mitigation-guidehttps://runtimerebel.com/blog/windows-11-c-drive-access-failure-on-samsung-pcs-mitigation-guideMicrosoft investigates an issue where February 2026 Windows 11 security updates prevent C: drive access on Samsung laptops, blocking all applications.Sat, 14 Mar 2026 00:32:56 GMTWindows 11SamsungFebruary 2026 UpdateDisk Access ErrorMicrosofthttps://runtimerebel.com/blog/bitwarden-passkey-login-for-windows-11-implementation-guidehttps://runtimerebel.com/blog/bitwarden-passkey-login-for-windows-11-implementation-guideBitwarden introduces passkey login support for Windows 11, providing phishing-resistant authentication using FIDO2 standards for enhanced account security.Thu, 05 Mar 2026 00:35:14 GMTBitwardenPasskeysWindows 11FIDO2Phishing Resistancehttps://runtimerebel.com/blog/windows-11-hardens-batch-file-execution-to-counter-script-attackshttps://runtimerebel.com/blog/windows-11-hardens-batch-file-execution-to-counter-script-attacksMicrosoft tests security enhancements for batch and CMD files in Windows 11 Insider Build 27723 to mitigate Living-off-the-Land (LotL) script abuse.Fri, 27 Feb 2026 20:11:55 GMTWindows 11Batch FilesCMDLOTLEndpoint SecurityMicrosoft Insiderhttps://runtimerebel.com/blog/windows-11-kb5077241-native-sysmon-integration-and-bitlocker-updateshttps://runtimerebel.com/blog/windows-11-kb5077241-native-sysmon-integration-and-bitlocker-updatesMicrosoft integrates native Sysmon and enhances BitLocker management in the Windows 11 KB5077241 optional update, providing advanced telemetry for defenders.Wed, 25 Feb 2026 08:20:48 GMTKB5077241SysmonBitLockerWindows 11MicrosoftEndpoint Telemetryhttps://runtimerebel.com/blog/microsoft-investigating-mouse-pointer-bug-in-classic-outlookhttps://runtimerebel.com/blog/microsoft-investigating-mouse-pointer-bug-in-classic-outlookMicrosoft confirms a bug in classic Outlook causing the mouse cursor to disappear during email composition. Discover the technical details and mitigation steps.Tue, 24 Feb 2026 08:21:38 GMTOutlookMicrosoftWindows 11Classic OutlookUI Regression