KB5070312: [File Management] Fixed: This update addresses an issue with extracting .tar files

November 20, 2025—KB5070312 (OS Build 22631.6276) 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.

• [Country and Operator Settings Asset (COSA)] Fixed: This update brings profiles up to date for certain mobile operators.
• [File Explorer] Fixed: This update addresses an issue where File Explorer sometimes didn’t respond to mouse clicks until you closed and reopened it.
• [File Management] Fixed: This update addresses an issue with extracting .tar files when file or folder names contain more than 34 commonly used Chinese characters.
• [Group Policy and Configuration] Fixed: This update addresses an issue where the HideRecommendedSection policy didn’t work in Windows 11 Enterprise multi-session environments, such as Azure Virtual Desktop (AVD). Even when configured using Group Policy or Configuration Service Provider (CSP), recommendations still appeared in AVD sessions.