KB5065790: Fixed: An issue that caused Windows sign-in screen to stop responding

September 23, 2025—KB5065790 (OS Build 22621.5984) Preview

Highlights

• This non-security update includes quality improvements.

​​​​​​​Improvements​​​​​​​

• This non-security update includes quality improvements. The following summary outlines key issues addressed by the KB after you install it. Also, included are available new features. The bold text within the brackets indicates the item or area of the change.
• [Authentication] Fixed: An issue that caused Windows sign-in screen to stop responding after a user enters the SIM PIN during sign-in using a mobile broadband connection.
• [Browser] Fixed: This update addresses an issue that affects Microsoft Edge when running in Internet Explorer compatibility mode. It stops responding due to certain same-domain redirects.
• [Country and Operator Settings Asset (COSA)] Fixed: This update brings profiles up to date for certain mobile operators.
• [Display Kernel] Fixed: This update addresses an issue that affects display configuration changes during Remote Desktop Protocol (RDP) sessions with multiple monitors. The system might shut down unexpectedly when disconnected from a docking station during a streaming session.
• [Input]

1. Fixed: An issue where some characters didn’t display correctly when using the Chinese Input Method Editor (IME).
2. Fixed: This update addresses an issue where certain Chinese characters appeared as empty boxes in some text fields, such as those used in Connection Manager Administration Kit, when a character limit was set.

• [Networking (known issue)] Fixed: This update addresses an issue where you might not be able to connect to shared files and folders if you're using the Server Message Block (SMB) v1 protocol on NetBIOS over TCP/IP NetBIOS (NetBT). This can happen after installing update KB5065431.
• [Printer] Fixed: An issue where viewing the printer queue in Settings for a shared printer caused the Print Queue user interface to stop working.
• [System services and reliability] Fixed: Addresses an issue that caused McpManagement service to appear without a description on Windows.

If you installed earlier updates, your device downloads and installs only the new updates contained in this package.