January 18, 2018—KB4073291 (OS Build 16299.201)

Applies to: Windows 10, version 1709

Improvements and fixes


  • This update provides additional protections for 32-Bit (x86) version of Windows 10 1709 after you install January 3, 2018—KB4056892 (OS Build 16299.192).
  • Addresses issue originally called out in KB4056892 where calling CoInitializeSecurity with the authentication parameter set to RPC_C_AUTHN_LEVEL_NONE resulted in the error STATUS_BAD_IMPERSONATION_LEVEL.

Known issues in this update


Symptom Workaround
Windows Update History reports that KB4054517 failed to install because of Error 0x80070643.

Even though the update was successfully installed, Windows Update incorrectly reports that the update failed to install. To verify the installation, select Check for Updates to confirm that there are no additional updates available.

You can also type About your PC in the Search box on your taskbar to confirm that your device is using the expected OS build.

Microsoft is working on a resolution and will provide an update in an upcoming release.

After installing this update, some users may experience issues logging into some websites when using third-party account credentials in Microsoft Edge.

This issue is resolved in KB4074588.

Because of compatibility issues with some versions of antivirus software, this update causes stop errors or abrupt reboots. Contact your antivirus (AV) vendor and follow their guidance.
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.

 

More information


Prerequisites

To install this update, you must have Windows 10 Version 1709 installed. For more detailed instructions on installing the prerequisites please refer to the Windows Client Guidance for IT Pros.

Registry information

To apply this update, you don't have to make any changes to the registry. 

Restart requirement

A restart may be required after applying this update.

How to get this update


To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4073291.