Note
- Original publish date: February 24, 2026
- KB ID: 5081884
Change Log
| Change Date |
Change Description |
| June 29, 2026 |
- New updates have been added to the Announcement history for June 24th and 29th.
|
| June 23, 2026 |
- New updates have been added to the Announcement history for June 4th thru July 15th.
|
| May 21, 2026 |
- New updates have been added to the Announcement history for April 3rd thru June 4th.
|
| April 2, 2026 |
- A new update has been added to the Announcement history for April 2nd.
|
| March 23, 2026 |
- New updates have been added to the Announcement history for March 10 thru April 23rd.
|
| February 27, 2026 |
- A new update has been added to the Announcement history for February 23rd.
|
Overview
This page provides updates and announcements related to the deployment of new Secure Boot certificates on Windows devices. It highlights significant milestones, changes in rollout status, and important communications that may affect device readiness, management, or servicing. Updates are published as the deployment progresses and are intended to help customers, IT professionals, and partners stay informed about notable developments.
Updates and announcement history
The table below lists significant announcements and updates related to the Secure Boot certificate deployments, in chronological order from newest to oldest.
| Date |
Announcements |
| July 15, 2026 |
OEM Secure Boot Office Hours |
| July 8, 2026 |
Secure Boot Office Hours for virtualized environments |
| July 1, 2026 |
Ask Microsoft Anything: Windows Server Secure Boot |
| June 29, 2026 |
If you’re prevented from updating Secure Boot certificates published. |
| June 24, 2026 |
What IT teams need to know about Linux Secure Boot certificates expiring in 2026 published. |
| June 23, 2026 |
Best practices for deploying Secure Boot certificate updates - Windows IT Pro Blog published. |
| June 4, 2026 |
On demand: Ask Microsoft Anything: Secure Boot |
| May 19, 2026 |
Updated Secure Boot status report in Windows Autopatch - Windows IT Pro Blog published. |
| May 18, 2026 |
On demand: Ask Microsoft Anything: Secure Boot |
| May 13, 2026 |
Secure Boot update from 2011 to 2023 certificates: Trusted Launch VMs (TVM) and Confidential VMs (CVM) published. |
| April 27, 2026 |
Assess Secure Boot status with Microsoft Defender published. |
| April 23, 2026 |
On demand: Ask Microsoft Anything: Secure Boot |
| April 3, 2026 |
Updated: Sample Secure Boot E2E Automation Guide |
| April 2, 2026 |
Secure Boot certificate update status in the Windows Security app published.
IT admin guide: Secure Boot certificate update status in the Windows Security app published. |
| March 19, 2026 |
Secure Boot troubleshooting guide published. |
| March 16, 2026 |
A how-to guide for customers that want to deploy to their fleet in a gradual manner. Documentation and sample PowerShell scripts are published here: Sample Secure Boot E2E Automation |
| March 12, 2026 |
On demand: Ask Microsoft Anything: Secure Boot |
| March 10, 2026 |
A Closer Look at the High Confidence Database published. |
| March 9, 2026 |
Deep dive: Secure Boot certificate updates explained |
| February 23, 2026 |
Windows Server playbook and call to action blog posts published.
Windows Server Secure Boot playbook for certificates expiring in 2026
Prepare your servers for Secure Boot certificate updates |
| February 18, 2026 |
A how-to page for Intune users for deploying scripts and a dashboard for monitoring the status of devices managed by Intune.
Monitoring Secure Boot certificate status with Microsoft Intune remediations |
| February 13, 2026 |
The Sample Secure Boot Inventory Data Collection script was updated with improved coverage and reliability. |
February 10, 2026
February 9, 2026 |
Made significant updates to the Secure Boot DB and DBX variable update events page, including adding some new events and summary information on the device specific events. |
| February 10, 2026 |
Added guidance on When Secure Boot certificates expire on Windows devices and how they behave if the new certificates are not present. |
| February 10, 2026 |
February Cumulative Updates included additional High Confidence devices |
| February 5, 2026 |
On demand: Ask Microsoft Anything: Secure Boot - February 2026 |
| January 13, 2026 |
January Cumulative Updates included first drop of High Confidence devices |
| December 10, 2025 |
On demand: Ask Microsoft Anything: Secure Boot - Dec. 2025 |
| November 13, 2025 |
Secure Boot playbook for certificates expiring in 2026 published. |
