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Windows 11 23H2 Windows 11 23H2 Optional preview
Preview Final update for this version

KB5070312

KB5070312: Cumulative update for Windows 11, version 23H2, November 2025. File Explorer clicks and Chinese-named TAR extraction addressed

In short

Addresses File Explorer mouse-click problems, TAR extraction failures with long Chinese names, and other issues. It is the final preview update for version 23H2; supported editions will receive only monthly security updates going forward.

Does it affect you? Applies to: Devices running Windows 11, version 23H2. The announced November 10, 2026 end-of-updates date applies to Enterprise and Education editions.

Build
22631.6276
Restart
Required
Review notes Additional details from the official release notes (1) Read note
  • This page Secure Boot certificates used by most Windows devices began expiring in June 2026, but devices without the newer certificates continue to start and receive standard Windows updates. Users can check status in Windows Security; IT administrators should follow Microsoft’s Secure Boot Playbook.

The official sources are linked at the end of the page.

What changes

Fixes 4 changes

Country and Operator Settings Asset (COSA)

Verified in package
  • Profiles for certain mobile operators are brought up to date.1

File Explorer

  • Addresses cases where File Explorer sometimes stopped responding to mouse clicks until you closed and reopened it.2

File Management

  • Addresses an issue extracting TAR files when file or folder names contain more than 34 commonly used Chinese characters.3

Group Policy and Configuration

For: Windows 11 Enterprise multi-session and AVD environments

  • Addresses cases where recommendations still appeared in Azure Virtual Desktop sessions despite the policy being configured.4
    The HideRecommendedSection policy did not work in Windows 11 Enterprise multi-session environments, including AVD, when configured through Group Policy or Configuration Service Provider (CSP).

Improvement 1 change

Servicing stack

  • The component that installs Windows updates receives quality improvements.5
    The update includes servicing stack update KB5071963, build 22621.6265.

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2025-11-20
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5068865, KB5067112, KB5066793, KB5065790
+43 earlier KB5065431, KB5064080, KB5066189, KB5063875, KB5062663, KB5062552, KB5060826, KB5060999, KB5062170, KB5058502, KB5058405, KB5055629, KB5058919, KB5055528, KB5053657, KB5053602, KB5052094, KB5051989, KB5050092, KB5050021, KB5048685, KB5046732, KB5046633, KB5044380, KB5044285, KB5043145, KB5043076, KB5041587, KB5041585, KB5040527, KB5040442, KB5039302, KB5039212, KB5037853, KB5037771, KB5036980, KB5036893, KB5035942, KB5035853, KB5034848, KB5034765, KB5034204, KB5034123
Replaced by
KB5071417
VersionBuildChannel
23H2 22631.6276 General availability
23H2 22631.6269 Release Preview Channel

Security

No vulnerabilities are listed for this update.

Updated components

820 files changed since the previous update for the same versions.

Top changed componentsFiles
Graphics and display26
File Explorer and shell18
Settings13
Networking11
Hyper-V and virtualization10
Security and sign-in10
Storage and file systems8
Remote Desktop6
Secure Boot5
Kernel4
Audio2
Search2

Verified in package: changed files confirm Country and Operator Settings Asset (COSA).

Sources

Updated
Cited passages from Microsoft's official notes (5)
  1. 1. [Country and Operator Settings Asset (COSA)] Fixed: This update brings profiles up to date for certain mobile operators. support.microsoft.com
  2. 2. [File Explorer] Fixed: This update addresses an issue where File Explorer sometimes didn’t respond to mouse clicks until you closed and reopened it. support.microsoft.com
  3. 3. [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. support.microsoft.com
  4. 4. [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). support.microsoft.com
  5. 5. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 5 quoted passages · compared with Microsoft's page on Oct 20, 2026
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 4/5, clarity 4/5, completeness 3/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake