KB5034134 for Windows 10 – Jan 2024

KB5034134 is the cumulative update for Windows 10 x86 and x64 editions. It can also be called the cumulative update for Windows 10 version 1507. The update was released as part of the ‘Patch Tuesday’ project of Microsoft on 9 January 2024.

Salient points

  • KB5034134 is a cumulative update that supersedes KB5033379. KB5033379 was released in December 2023.
  • KB5034134 corresponds to Windows 10 build 10240.20402.
  • KB5033379 corresponds to Windows 10 build 10240.20345.
  • KB5032390 is the latest Servicing Stack Update that corresponds to KB5032199 , KB5033379, and KB5034134. KB5032390 was released on 14 November 2023.
  • There is no additional or separate SSU release for Windows 10 in January 2024.
  • 22 security vulnerabilities affect Windows 10 32-bit systems. 1 of these threats is a ‘CRITICAL’ severity vulnerability
  • 22 security vulnerabilities affect Windows 10 x64 or 64-bit systems. 1 of these threats is a ‘CRITICAL’ severity vulnerability.

Download KB5034134

KB5034134 can be applied automatically using one of the following methods:

  • Windows Update
  • Windows Update for Business
  • WSUS or Windows Server Update Services

WSUS remains the most preferred method of rollout updates on Windows servers and workstations.

As part of the automated deployment, the latest Servicing Stack Update KB5032390 will be installed automatically as part of the Windows Update process.

You can also apply KB5034134 manually. For manual application, you need to follow a two-step process.

  1. Download and install Servicing Stack Update KB5032390
  2. Download and install KB5034134 cumulative update

The Servicing Stack Update and Cumulative Updates are available as offline installer files. You can download these offline installer files using the Microsoft Update Catalog site. Or, alternatively, you could use the direct download links shared below to download the offline installer files.

Download Servicing Stack Update KB5032390

Upon installation, the Servicing Stack Updates do not cause the system to reboot.

Download cumulative update KB5034134

The cumulative update will cause the system to reboot. So, it is also suggested, that the change is implemented as part of an organized change process.

Also, all changes of KB5033379 are included in KB5034134. If you skipped installing KB5033379, you can install KB5034134 directly. This will offer full security and protection on the Windows 10 endpoint systems.


Windows 10 x86 edition and x64 editions are affected by 22 security vulnerabilities. 1 of this is a CRITICAL vulnerability. The details of the vulnerability are shared below. It could lead to ‘Security Feature Bypass’ attacks.

CRITICAL vulnerabilities

There is a single security vulnerability with CRITICAL severity levels for Windows 10 x64 and x86 systems. The vulnerability is shared below.

CVE detailsCVSSSeverityImpactDescription
CVE-2024-206749.0CRITICALSecurity Feature BypassThe authentication feature could be bypassed as this vulnerability allows impersonation.

An authenticated attacker could exploit this vulnerability by establishing a machine-in-the-middle (MITM) attack or other local network spoofing technique, then sending a malicious Kerberos message to the client victim machine to spoof itself as the Kerberos authentication server.

KB5034134 – Changelog

The following changes or improvements are part of the KB5034134 cumulative update for Windows 10:

  • This update makes miscellaneous security improvements to internal OS functionality.
  • This update addresses security issues for your Windows operating system
  • This update addresses an issue that affects the ActiveX scroll bar. It does not work in IE mode.
Rajesh Dhawan

Rajesh Dhawan is a technology professional who loves to blog about smart wearables, Cloud computing and Microsoft technologies. He loves to break complex problems into manageable chunks of meaningful information.