March 5, 2018—KB4090913 (OS Build 16299.251)

March 15, 2018


Applies to: Windows 10 version 1709


 Improvements & Fixes


This update includes quality improvements. No new operating system features are being introduced in this update. Significant changes include the following:

  • Addresses an issue in which some USB devices and onboard devices, such as a built-in laptop camera, keyboard, or mouse, stop working. This may occur when the Windows Update servicing stack incorrectly skips installing the newer version of some critical drivers in the cumulative update and uninstalls the currently active drivers during maintenance.


  • Addresses issue where some devices may fail to boot with "INACCESSIBLE_BOOT_DEVICE".

If you installed earlier updates, only the new fixes that are contained in this package will be downloaded and installed on your device.

For more information about the resolved security vulnerabilities, see the Security Update Guide.

Known issues in this update                                                                                                  


Symptom: Windows Update History reports that KB4054517 failed to install because of error 0x80070643.



Workaround: Even though the update was successfully installed, Windows Update incorrectly reports that the update failed to install. Select Check for Updates to verify that there are no additional updates available. You can also type About your PC in the search box on the taskbar to verify that your device is using the expected OS build. Microsoft is working on a resolution and will provide an update in an upcoming release.

Symptom: Because of an issue that affects some versions of antivirus software, this fix applies only to computers on which the antivirus ISV updated the ALLOW REGKEY.


Workaround: This issue is resolved in KB4088776.

Symptom: Because of an AD FS server issue that causes the WID AD FS database to become unusable after a restart, the AD FS service may fail to start.


Workaround: This issue is resolved in KB4088776.


Symptom: After installing KB4090913 the Mixed Reality Portal may fail to initialize resulting in error “SXXXXXXX-X” or may present a “We couldn’t download the Windows Mixed Reality Software” message after the software is successfully downloaded.


Workaround: This issue is resolved in KB4088776.


Symptom: Users with Windows 10 Version 1709 Enterprise that have installed the January 2018 Delta package may encounter failure issues when installing the February and March 2018 updates from the Microsoft Update Catalog. Specifically, the Windows 10, version 1709 February Delta Update may silently fail.




Microsoft is aware of this issue and has expired the following Windows 10 version 1709 Delta Update KBs on the Microsoft Catalog on March 13, 2018:


KB4056892 – January 2018

KB4074588 – February 2018

KB4088776 – March 2018


Microsoft recommends that users uninstall the Windows 10 version 1709 January KB4056892 Delta Update package and install the March 2018 full latest cumulative update, KB4088776. Customers may resume using Delta Update packages with the April 2018 Windows 10 version 1709 monthly cumulative update.



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