December 13, 2022—KB5021255 (OS Build 22621.963)
Highlights
This update addresses a known issue that might affect Task Manager. It might display certain elements in the user interface (UI) in unexpected colors. Some parts of the UI might not be readable. This issue might occur if you have "Choose your mode" set to "Custom" in the Personalization Colors section of Settings.
This update addresses security issues for your Windows operating system.
Improvements
This security update includes improvements that were a part of update KB5020044 (released November 29, 2022). When you install this KB:
This update addresses an issue that might affect Data Protection Application Programming Interface (DPAPI) decryption. The decryption of a certificate private key might fail. Because of this, virtual private network (VPN) and other 802.1 certificate-based authentication might fail. This issue might occur when you encrypt the DPAPI master key with a wrong value.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
For more information about security vulnerabilities, please refer to the Security Update Guide website and the December 2022 Security Updates.