certificate update Archives

Winsage

August 3, 2026

Microsoft warns Windows 11 Insiders of crucial mandatory upcoming deadline

Microsoft is updating Secure Boot certificates for Windows 11 PCs, as the previous certificates are 15 years old and nearing expiration. Users can check their certificate status easily. An advisory was issued in early September regarding changes for Windows Insider channels, particularly affecting the Experimental and Beta channels, with a deadline for certificate updates set for August 11, 2026. The Release Preview builds will not be affected by this update requirement. Users in the impacted channels must update to specific builds to obtain the new certificates, or they may stop receiving updates after the deadline. The minimum build requirements for each channel are outlined, and users can check their current Windows 11 Insider build by using the winver command. Microsoft has confirmed that these updates will not impact activation or licensing status.

Winsage

July 20, 2026

Windows 11’s biggest updates may need multiple reboots, but that’s normal, don’t force shutdown

Users may experience double reboots when installing substantial Windows updates, such as the April and July 2026 Updates, due to factors like Secure Boot and .NET Framework updates. The July 2026 .NET Framework update specifically requires a separate reboot. Microsoft is still rolling out the Secure Boot 2023 certificate update, which may also lead to multiple reboots. Users are advised not to panic during these reboots and to allow the system time to complete the installation process. Additionally, Microsoft has warned against delaying updates for more than three days due to increasing update sizes related to security vulnerabilities. Some users may encounter SCEP certificate errors in the Event Viewer after the July 2026 Update, but these errors do not indicate a failure of the update process.

Winsage

July 19, 2026

Windows 11 Secure Boot is a messy ride on older PCs, and even Microsoft can’t fix it

Microsoft held an OEM Secure Boot Office Hours event with manufacturers like Acer, Asus, Dell, and HP to discuss issues related to the Windows 11 Secure Boot 2023 certificate rollout. Many IT administrators left with unresolved concerns, particularly regarding Secure Boot certificate errors. Participants reported persistent problems, including failures of suggested solutions from official documentation to apply to their hardware configurations. Ed Tittel shared his experience with compliance issues related to CA-2023 certificates, noting that ASUS motherboards sometimes required Secure Boot to be disabled temporarily, while MSI models exhibited erratic behavior. ASRock systems needed manual key resets, and documentation was lacking. Devices from Dell, HP, and Lenovo performed better but still faced staggered rollouts and required multiple reboots for BIOS updates. Specific issues raised included HP's BitLocker recovery loop persisting even with the latest BIOS, challenges with legacy device support from HP, devices showing Secure Boot Status as Unknown, and failures in updating the KEK on HP EliteBooks. Some questions from IT administrators regarding Dell and HP went unanswered during the session. The experiences highlighted a trend of Secure Boot issues across multiple OEMs, not limited to a single vendor. IT administrators are advised to pilot updates on representative hardware, back up BitLocker recovery keys, and consult OEM-specific advisories. The unresolved issues reflect common challenges faced by users, indicating that problems with Secure Boot certificate deployments are widespread across various manufacturers.

Winsage

July 18, 2026

Windows 11 Secure Boot certificates have expired, and Microsoft says what to do next

Microsoft held its OEM Secure Boot Office Hours event on July 15, where engineers collaborated with OEM representatives from companies like Acer, Asus, Cisco, Dell, and HP. IT administrators were able to ask live questions about the Secure Boot 2023 rollout. The discussion thread became a detailed technical record, especially following the expiration of the first certificates three weeks prior. Concerns raised by IT admins included BitLocker recovery loops, stuck confidence ratings, and unhelpful Intune error codes. Key facts include: - Devices offline for long periods will still receive the 2023 certificates upon reconnecting to Windows Update. - Devices with existing 2023 certificates in firmware will switch to the new boot manager after the latest Windows patches are installed. - A new script, Detect-SecureBootCertUpdateStatus.ps1, is available in Windows for checking certificate status. - BIOS updates may reset a device’s confidence rating to unrated, which is normal and does not indicate certificate failure. - Admins should edit the AvailableUpdates registry key, not the AvailableUpdatesPolicy, which is managed by Intune and Group Policy. - A licensing bug affecting AvailableUpdatesPolicy on devices upgraded from Pro to Enterprise was resolved by Microsoft in 2026. - BitLocker recovery is not typically linked to the certificate update process but may relate to firmware or PCR issues. - Dell and HP provided guidance on which BIOS versions include the 2023 certificates for their newer models. - Older HP EliteBook 840 G5 units require a manual update package for the new certificates. - Eligible devices can still receive the 2023 certificates in the future, and Surface devices released from 2024 onward come pre-equipped with them. - Microsoft confirmed that devices running 2011 certificates will not lose the ability to receive the 2023 chain. - The Microsoft Corporation KEK CA 2011 and Microsoft UEFI CA 2011 certificates have expired, with the Microsoft Windows Production PCA 2011 set to expire on October 19, 2026.

Winsage

July 14, 2026

Secure Boot certificate updates are broken on some PCs, Microsoft confirms

Microsoft has acknowledged that several older Secure Boot certificates have expired, necessitating updates for Windows 10 and 11 users. A temporary halt in the issuance of new Secure Boot certificates affects specific PCs, particularly various HP models. Most PCs will receive updates automatically through Windows Update, but some may require a firmware update from the manufacturer. Users may see messages indicating that Secure Boot certificate updates are paused or blocked due to known issues or hardware/firmware limitations. Until manufacturers like HP release necessary firmware updates, users cannot update their Secure Boot certificates. Although the immediate risk from expired certificates is low, it is expected to increase over time. Devices with un-updated Secure Boot certificates will continue to function normally, but they will not receive new security updates, making them vulnerable to emerging threats. Essential features that rely on updated security measures may cease to function correctly as new security challenges arise.

Winsage

July 10, 2026

Microsoft confirms Secure Boot update failing on some Windows 11 PCs, promises a resolution

Microsoft has acknowledged that some Windows 11 PCs are facing issues with Secure Boot certificate updates, which may fail to install or be blocked. The company is working with PC manufacturers to develop a patch, while users may need to take proactive measures if their certificates are obstructed. Microsoft has temporarily halted the rollout of Secure Boot for certain devices due to complications, and affected users will receive detailed error messages in the Windows Security app regarding their Secure Boot certificates. Secure Boot certificates issued in 2011 have expired, and Microsoft is replacing them with new certificates issued in 2023. Most modern hardware is already utilizing the new certificates, but some devices may have disabled Secure Boot or faulty firmware. Users can check their Secure Boot status in the Windows Security app. HP has confirmed that Secure Boot updates are being blocked on some of its PCs due to a BitLocker issue, which prevents the installation of new certificates. Microsoft has paused Secure Boot certificate updates for devices affected by known issues while collaborating with manufacturers to identify specific devices or firmware complications. A firmware update will be necessary for affected devices, but it is not yet available. The majority of PCs have received the Secure Boot certificates via Windows Update, but compatibility issues may prevent some devices from receiving the update. Older devices or those not among the OEM’s top-selling models may not receive updates if the UEFI firmware is unsupported. Secure Boot is a security feature required for Windows 11, preventing unauthorized software from executing at boot. While an expired Secure Boot certificate does not stop a PC from functioning, it may limit long-term security protection. Microsoft advises users not to disable Secure Boot, as it would compromise security further.

Winsage

June 29, 2026

OEMs reveal Windows 11 Secure Boot fix after deadline passes, here’s how to update your PC

Major PC manufacturers, including HP, Dell, ASUS, Lenovo, MSI, Acer, Samsung, LG, and Microsoft’s Surface division, have provided guidance on transitioning to new Secure Boot certificates as the expiration of Microsoft’s 2011 certificates approaches. The expiration will occur in three phases: Microsoft Corporation KEK CA 2011 expired on June 24, 2026; Microsoft UEFI CA 2011 expired on June 27, 2026; and Microsoft Windows Production PCA 2011 is set to expire on October 19, 2026. Microsoft has begun rolling out replacement certificates through Windows Update, contingent on OEMs providing compatible BIOS updates. ASUS offers detailed documentation for both consumer and commercial devices, confirming that most users will receive updates automatically. Lenovo provides direct download links for BIOS updates organized by product family and specifies which products will not receive updates. Dell's support article covers its entire product lineup, noting that devices with an End of Service Life before January 1, 2026, will not receive updates. HP outlines a dual-track approach for updates, with specific timelines for commercial PCs. Microsoft's Surface devices receive updates directly from Microsoft, while MSI categorizes guidance based on processor generation for its laptops. Acer emphasizes backing up the BitLocker recovery key and provides a model table for confirmed BIOS release dates. Samsung confirms that all PCs running Windows 10 or 11 will function normally post-expiration, but security updates will cease. LG has released a guide for checking BIOS updates for its PCs. To verify if a PC has the 2023 certificates, users can check the Secure Boot section in Windows Security. A green checkmark indicates successful application, while yellow or red icons indicate pending updates or incompatibility. Microsoft has pushed the certificates to all eligible devices as of June 2026.

Winsage

June 25, 2026

Windows 11 Secure Boot update released to all, hours ahead of expiry

Microsoft has begun rolling out the Secure Boot 2023 certificate update to eligible Windows 11 and Windows 10 PCs ahead of the expiration of the Microsoft Corporation KEK CA 2011 on June 24, 2026. This update enhances device targeting data for automatic Secure Boot certificate updates. Secure Boot is a firmware-level security feature that verifies digital signatures of boot components to prevent rootkits and bootkits. The certificates for Secure Boot were first issued in 2011, with subsequent expirations for related certificates occurring in June and October 2026. Users can check their Secure Boot certificate status through the Windows Security app or System Information. If a PC does not receive the update, it will still boot normally but will lose the ability to receive future boot-level security updates. Multiple restarts after updates are expected due to the Secure Boot certificate process. A new folder, C:WindowsSecureBoot, is not malware but is used for staging cryptographic certificate files. Windows 10 users enrolled in the Extended Security Updates program will also receive the Secure Boot update, while those not enrolled will not. The expiration of the KEK CA 2011 means Microsoft will not be able to sign new Secure Boot revocation payloads using the old key, but existing signed payloads will remain functional.

Winsage

June 24, 2026

Windows 11 Secure Boot update released to all, hours ahead of expiry

Microsoft has begun rolling out the Secure Boot 2023 certificate update for eligible Windows 11 and Windows 10 PCs ahead of the expiration of the original certificates on June 24, 2026. The update includes additional device targeting data to increase coverage for automatic updates. Devices receive the new certificates after demonstrating successful update signals. The original Secure Boot certificates were issued in 2011, with expiration dates set for June 24, 2026, June 27, 2026, and October 19, 2026. Microsoft has been distributing replacement 2023 certificates since 2024, with the June 2026 update expanding eligible devices significantly. Users can check their Secure Boot status through the Windows Security app or System Information. If a PC did not receive the update, it will still function normally but may not receive future boot-level security updates. Multiple restarts after updates are expected behavior, and the SecureBoot folder in Windows is not malware. Windows 10 users in the Extended Security Updates program are also receiving the Secure Boot update. The expiration of the Microsoft Corporation KEK CA 2011 on June 24 means no new Secure Boot revocation payloads can be signed with the old key, but existing signed payloads will continue to function.