This article lists the fixes and quality improvements

January 17, 2026—KB5077795 (OS Build 17763.8280) Out-of-band

Summary
This article lists the fixes and quality improvements included in this out-of-band update.

This out-of-band update includes fixes and improvements that are part of the following update:

• January 13, 2026—KB5073723 (OS Build 17763.8276)

The following is a summary of the issues that this update addresses when you install this update. The bold text within the brackets indicates the item or area of the change we are documenting.

[Remote Desktop] Fixed: Some users experienced sign-in failures during Remote Desktop connections. This issue affected authentication steps for different Remote Desktop applications on Windows such as the Windows App.

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 new Security Update Guide website and the January 2026 Security Updates.

For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 10, version 1809, see its update history page.