Important
This update applies only to devices enrolled in hotpatch updates where the Pluton security processor has been configured as the TPM. For more information, see Hotpatch updates.
Improvements and fixes
The following summary outlines key issues addressed by this update. The bold text within the brackets indicates the item or area of the change.
- [Security] This update provides security improvements for devices where the Pluton security processor has been configured as the TPM. To deliver these improvements, it is offered as a standalone security update and requires a restart to complete installation.
Note
This standalone update will install and require a restart for applicable devices. This update is offered after the August 2026 security hotpatch update (KB5120994) is installed.
Known issues in this update
Microsoft is not currently aware of any issues with this update.
How to get this update
Install this update
To install this update, use one of the following release channels.
| Available | Next Step |
|---|---|
| ✅ | This update downloads and installs automatically from Windows update and Microsoft Update. |
File information
For a list of the files provided in this update, download the file information for KB5123273: Security Update.