Windows 11 KB5043178 now has been rolled out to Insiders members in the Release Preview Channel. Wonder about this new build 26100.1876? In the comprehensive guide on MiniTool, everything you want to know including what’s new in this update and how to download & install it for 24H2 is covered.

The official release of the major Windows update, Windows 11 24H2, is not far away. On September 23, 2024, Microsoft claimed the rollout of Windows 11 KB5043178 to members in Windows Insider Program for 24H2. This KB lifts the build number to 26100.1876 and users in the Release Preview Channel can get it to enjoy a new journey.

How to Install/Upgrade to Windows 11 24H2 (Earlier Preview)
How to Install/Upgrade to Windows 11 24H2 (Earlier Preview)

How to install Windows 11 24H2 early preview before its official release on your PC? Download its ISO file or update it via Insider Program.

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Windows 11 Build 26100.1876 contains some features that will be released to users under normal conditions while some features will be rolled out gradually. Let’s read through to know new features and improvements.

What’s New in Windows 11 KB5043178

Features & Improvements under Normal Rollout

  1. Input Method Editor (IME) – A memory leak may occur when closing the window where a combo box has input focus.
  2. WebView2 apps – Input from Xbox 360 and Bluetooth controllers cannot be detected by them.
  3. Screen readers – When running the NonVisual Desktop Access (NVDA) app and other screen readers as an administrator, these apps fail to narrate all the screen content from some apps.
  4. Open Source Software – Windows 11 24H2 KB5043178 adds attributions to credits.txt files for Rust OSS components.

Features & Improvements under Gradual Rollout

  • Lock screen – When media is playing, you can see media controls in the lower part of the lock screen at its center.
  • Battery life – If the battery level reaches 20% meanwhile Energy Saver is in the Always On status, you are prompted to plug in your device after installing the new Windows 11 Build 26100.1876.
  • Start menu – In the Start menu, you will find an option called Sign out on the account manager. Select the ellipses icon to change to a different user.
  • Taskbar – Windows 11 KB5043178 adds a new feature that allows you to share local files directly from the search results in the Search box on Taskbar.
  • More…

How to Install Windows 11 24H2 KB5043178

Tips:
Before proceeding, backing up your PC is a good idea as unstable updates are likely to cause system issues and even data loss. Try the professional backup software - MiniTool ShadowMaker to create a backup for your system or important files as a prevention tip. This tool plays an important role in file backup, disk backup, partition backup, system backup, file sync, and disk cloning.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

Here is a comprehensive guide to walk you through how to install Windows 11 Build 26100.1876 for 24H2.

KB5043178 Download & Install via Windows Update

Updated – Microsoft has released Windows 11 KB5043178 with build number 26100.1882 to its stable channel on September 30, 2024, which allows you to directly update to it via Windows Update without being an Insiders’ member.

Step 1: Access the Setting window by pressing Win + I.

Step 2: Under Windows Update, click Check for updates to begin checking for available updates including Windows 11 KB5043178. The system will automatically download and install them, and complete the installation after restarting the PC.

KB5043178 download via Windows Update

Manually Get KB5043178 via Microsoft Update Catalog

In addition, you have another option to get this update in case Windows 11 KB5043178 fails to install via Windows Update. To do so:

Step 1: Open Microsoft Update Catalog in a browser.

Step 2: Hit the Download button as per your system architecture.

Step 3: Click the given links to get all the .msu file and double-click on each one to complete the installation.

Tips:
In the event of KB5043178 not installing, you can try some generic workarounds, such as running Windows Update Troubleshooter, resetting Windows Update components, restart some services regarding Windows Update, manually installing it, etc.

Bonus: Back up Windows 11 Regularly

Windows 11 is not as stable as Windows 10, at least for now. Once you upgrade your PC to Windows 11 24H2 and install the new update KB5043178, we also recommend backing up the machine regularly to keep data safe although you use the latest system and make sure you can restore the PC to an earlier state in case of crashes. MiniTool ShadowMaker is of tremendous assistance.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

Step 1: Open this software and hit Keep Trial.

Step 2: Under Backup, choose what to backup and specify a target path.

Step 3: Tap on Back Up Now.

MiniTool ShadowMaker back up files under Backup
Tips:
To automatically back up your PC, go to Options > Schedule Settings, turn on this feature, and choose a schedule plan before the last step.
How to Backup Windows 11 to External Drive (Files & System)
How to Backup Windows 11 to External Drive (Files & System)

How to backup Windows 11 to an external hard drive or USB flash drive? See this post that focuses on Windows 11 backup for files and system.

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The End

You have in-depth knowledge of Windows 11 KB5043178, including its new features & improvements and how to get that update. For safety, remember to use MiniTool ShadowMaker to create a backup for the PC.

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About The Author

Vera
Vera

Position: Columnist

Vera is an editor of the MiniTool Team since 2016 who has more than 7 years’ writing experiences in the field of technical articles. Her articles mainly focus on disk & partition management, PC data recovery, video conversion, as well as PC backup & restore, helping users to solve some errors and issues when using their computers. In her spare times, she likes shopping, playing games and reading some articles.