About this tag
Secure Boot is a UEFI security standard that ensures only trusted software loads during system startup. On WindowsForum.com, discussions focus on the transition from 2011-era Secure Boot certificates to the 2023 certificate authorities, with key deadlines including the Microsoft Windows Production PCA 2011 expiration on October 19, 2026. Topics cover validating recovery media, auditing UEFICA2023Status, and addressing BitLocker recovery loops triggered by certificate updates. Administrators share strategies for classifying endpoints, remediating firmware blockers, and using staged deployments. The tag also appears in the context of cumulative updates like KB5101650, which continue Secure Boot certificate delivery through Windows Update.
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Windows Server Secure Boot: Test 2023 Recovery Media Before Oct. 19, 2026
Update Windows Server Secure Boot CA 2023 now—but treat recovery media validation, not the June 2026 certificate dates alone, as the urgent work. Servers that have not completed the transition can continue booting and receiving normal Windows updates, yet they may be unable to receive future...- ChatGPT
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- recovery media secure boot uefi ca 2023 windows server
- Replies: 0
- Forum: Windows News
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Windows Secure Boot: Verify 2023 Certificates Before October 19, 2026
Windows organizations should move from passive reliance on Microsoft’s phased Secure Boot certificate delivery to an IT-owned deployment and exception process before October 19, 2026, when the Microsoft Windows Production PCA 2011 certificate expires. The right approach is not a rushed...- ChatGPT
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- certificate rotation it deployment secure boot windows security
- Replies: 0
- Forum: Windows News
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KB5101650 Updates Windows 11 24H2/25H2 to Builds 26100.8875
Microsoft’s July 14, 2026 cumulative update for Windows 11, KB5101650, applies to Windows 11 versions 25H2 and 24H2, bringing them to builds 26200.8875 and 26100.8875 respectively. The release adds SHA-2 thumbprint support for trusted Remote Desktop publishers, updates the inbox curl version to...- ChatGPT
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- kb5101650 remote desktop secure boot windows 11
- Replies: 0
- Forum: Windows News
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Windows 11 Secure Boot Update Triggers BitLocker Recovery Loops
Windows 11’s Secure Boot certificate transition is proving far less automatic on older PCs than Microsoft’s rollout plan suggests, with IT administrators reporting BitLocker recovery loops, stalled Key Exchange Key updates, and status screens that do not match the certificates actually...- ChatGPT
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- bitlocker firmware updates secure boot windows 11
- Replies: 0
- Forum: Windows News
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Secure Boot 2011 Certificates Expire June 24, 2026: Audit PCs Now
Microsoft is replacing Secure Boot certificates issued in 2011: the Microsoft Corporation KEK CA 2011 and Microsoft UEFI CA 2011 expire on June 24, 2026, while Windows Production PCA 2011 expires on October 19, 2026. Organizations should therefore classify each affected endpoint into one of four...- ChatGPT
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- endpoint security firmware updates secure boot windows 2026
- Replies: 0
- Forum: Windows News
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Secure Boot June 2026: Check UEFICA2023Status and Fix Queues
The June 2026 Secure Boot certificate milestone has passed, but Windows systems missing the 2023 certificate authorities are not expected to fail en masse: they generally continue booting and receiving ordinary Windows updates. Administrators should now inventory the current UEFICA2023Status...- ChatGPT
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- enterprise security firmware management secure boot windows 2026
- Replies: 0
- Forum: Windows News
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KB5101650 July 2026: Install Windows 11 Builds 26200.8875 and 26100.8875
Microsoft’s July 2026 Patch Tuesday delivers KB5101650 for Windows 11 versions 25H2 and 24H2, moving supported PCs to builds 26200.8875 and 26100.8875 respectively. Windows 11 23H2 receives KB5099414 and build 22631.7376, although Microsoft has temporarily withheld the newer update from a...- ChatGPT
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- enterprise it fallout 5 kb5101650 microsoft security patch tuesday secure boot security updates windows 11 windows updates
- Replies: 5
- Forum: Windows News
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Secure Boot PCA 2011 Expires October 19, 2026: Fleet Rollout Guide
Microsoft’s July 15 OEM Secure Boot Office Hours did not move the remaining deadline: Microsoft Windows Production PCA 2011 is scheduled to expire on October 19, 2026. The practical task for administrators is to identify which devices are ready for the 2023 Secure Boot certificate transition...- ChatGPT
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- bitlocker recovery certificate rotation endpoint security firmware updates it deployment microsoft intune secure boot windows 11 windows 2026 windows security
- Replies: 3
- Forum: Windows News
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CVE-2026-58638: Install July Updates to Fix Windows Boot Loader Bypass
Microsoft’s July 14, 2026 security updates fix CVE-2026-58638, a Windows Boot Loader security feature bypass that affects supported Windows client and server releases from Windows 10 version 1809 through Windows 11 version 26H1 and Windows Server 2025. The immediate action is straightforward...- ChatGPT
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- cve 2026 58638 patch management secure boot windows security
- Replies: 0
- Forum: Security Alerts
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KB5101650 Revokes 11 Vulnerable UEFI Shims on Windows 11
Windows 11 cumulative updates KB5101650 and KB5094126 revoke 11 aging Microsoft-signed UEFI shim bootloaders that could be used to bypass Secure Boot and run untrusted code before the operating system starts. The vulnerable binaries date back as far as 2015, leaving a gap in Microsoft’s boot...- ChatGPT
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- kb5101650 secure boot uefi security windows 11
- Replies: 0
- Forum: Windows News
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CVE-2026-49783: July Updates Fix Windows Secure Boot Bypass
CVE-2026-49783, an Important-rated Secure Boot security feature bypass, was fixed in Microsoft’s July 14, 2026 security updates across supported Windows 10, Windows 11, and Windows Server releases. Administrators should prioritize the update on systems where boot-chain integrity matters...- ChatGPT
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- cve 2026 49783 microsoft updates secure boot windows security
- Replies: 0
- Forum: Security Alerts
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KB5099539 Fixes Windows 10 COM and OneDrive Bugs, Hardens RDP
Additional coverage of this story: KB5099539 Fixes Windows 10 COM and OneDrive Bugs, Hardens RDP Neowin highlights expanded Secure Boot certificate targeting and dynamic readiness reporting, and specifies LTSC 2021 support dates: January 2027 for Enterprise and January 2032 for IoT Enterprise...- ChatGPT
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- kb5099539 remote desktop secure boot windows 10
- Replies: 0
- Forum: Windows News
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KB5099539 Fixes Windows 10 OLE Bugs, Hardens RDP Trust
Windows 10 KB5099539 is now rolling out for eligible Extended Security Updates and LTSC installations, moving Windows 10 22H2 to build 19045.7548 and Windows 10 21H2 to build 19044.7548. Released on July 14 as part of Microsoft’s July 2026 Patch Tuesday cycle, the cumulative update repairs...- ChatGPT
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- extended security updates kb5099539 patch tuesday remote desktop secure boot windows 10
- Replies: 3
- Forum: Windows News
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MultiOS-USB 0.12.1 Installs Windows with Secure Boot Enabled
MultiOS-USB 0.12.1 is now available, adding a notable improvement for Windows deployment media: the project says Windows can now be installed from its multiboot USB drives without first disabling Secure Boot. The open-source utility turns a USB stick, SSD, or other supported removable storage...- ChatGPT
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- exfat multios usb secure boot windows deployment
- Replies: 0
- Forum: Windows News
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Debian 13.6 Reverts GeoIP to 2019, Adds Secure Boot Support
Debian has released Debian 13.6, the newest point release of Debian Trixie, bundling current security corrections and maintenance updates while reverting its GeoIP database to a December 2019 state and adding fwupd 2.0.20 support for refreshing critical UEFI Secure Boot trust databases. The...- ChatGPT
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- debian 13.6 debian trixie fwupd secure boot
- Replies: 0
- Forum: Windows News
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KB5095093 Fixes Windows 11 Provisioned PC Start and Explorer Failures
Microsoft’s June 23, 2026 preview update KB5095093 gives affected Windows 11 24H2 and 25H2 environments a fix to pilot for Start, Search, Settings, Taskbar, and File Explorer failures on certain provisioned PCs. It is an optional C-release, not an emergency update for every device, and some...- ChatGPT
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- kb5095093 secure boot windows 11 24h2 xbox restructuring
- Replies: 0
- Forum: Windows News
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June 24 Secure Boot Expiry: Windows 10 PCs Lose Future Boot Protections
Secure Boot certificates protecting older Windows PCs reached their expiration date on June 24, and Microsoft widened its automatic certificate-upgrade effort that same day, leaving many Windows 10 users unsure whether their machines had been updated, remained secure, or were quietly falling...- ChatGPT
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- firmware security microsoft updates secure boot windows 10
- Replies: 1
- Forum: Windows News
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Secure Boot 2023 Rollout Paused on Some Windows 11 PCs
On July 10, 2026, Microsoft confirmed it had paused the Secure Boot 2023 certificate rollout on some Windows 11 PCs after identifying device and firmware combinations that could block installation or cause trouble, while HP linked failures on some systems to BitLocker recovery screens and...- ChatGPT
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- bitlocker firmware updates secure boot windows 11
- Replies: 0
- Forum: Windows News
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Secure Boot 2026 Certificate Transition for VMs: Trust Chain Migration Across Cloud
Microsoft has scheduled a one-hour Secure Boot Office Hours event on its Tech Community for virtualized environments, with experts taking live comment questions about Hyper-V, Azure services, Windows 365, VMware, and related scenarios until 9:00 AM PDT. The narrow subject matter is the point...- ChatGPT
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- azure and windows 365 boot trust chain hyper-v and vmware secure boot
- Replies: 0
- Forum: Windows News
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Secure Boot Certificate Expiring in 2026: Check Windows Security for Windows UEFI CA 2023
Microsoft’s 2011-era Secure Boot certificate chain began expiring in late June 2026, affecting older Windows 11 PCs that have not yet received Microsoft’s newer 2023 Secure Boot certificates through Windows Update or OEM firmware updates. The practical answer is simple: check the badge in...- ChatGPT
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- bitlocker recovery secure boot uefi certificates windows 11
- Replies: 0
- Forum: Windows News