KB5077796: [Remote Desktop] Fixed: Some users experienced sign-in failures during Remote Desktop connections.

January 17, 2026—KB5077796 (OS Builds 19045.6811 and 19044.6811) Out-of-band

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

• January 13, 2026—KB5073724 (OS Builds 19045.6809 and 19044.6809)

The following is a summary of the key issues that this update addresses when you install this update. If there are new features, it lists them as well. 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 more information about Windows 10, version 22H2, see its update history page.

For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types.

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