Windows 11 KB5034123 Failed to Install
On January 9, 2024, Microsoft officially released a security update KB5034123 for Windows 11 22H2 and 23H2. This update made some improvements and fixes to known issues, such as Wi-Fi and security fixes. As with the usual security updates released, you can download and install Windows 11 KB5034123 through the Windows Update tab in Windows Settings.
However, some users are having trouble updating to Windows 11 KB5034123, causing KB5034123 to fail to install. This article is dedicated to helping you resolve this issue.
How to Fix if KB5034123 Not Installing
Fix 1. Install KB5034123 Manually
If KB5034123 fails to install from Windows Settings, you can choose to install this update via the Windows update catalog. This is a way of updating Windows manually by searching for a specific package.
First, go to the Windows update catalog official site.
Second, type KB5034123 in the search box and press Enter.
Third, click the Download button next to the needed update.
Finally, in the pop-up window, follow the on-screen instructions to complete the necessary actions.
Fix 2. Run the Windows Update Troubleshooter
Windows provides many troubleshooters to help you resolve different problems. If you get an error code or problem while downloading and installing Windows updates, the Windows Update Troubleshooter can help resolve the problem.
Step 1. Press the Windows + I key combination to bring up the Windows Settings window.
Step 2. In the System section, scroll down to click Troubleshoot.
Step 3. Next, select the Other troubleshooters option.
Step 4. In the new window, click the Run button next to Windows Update. After that, Windows will automatically detect and fix related issues, and you need to wait until the whole process is completed. Also, you need to take necessary actions during the process if necessary.
Fix 3. Run DISM and SFC Scan
If there are corrupted system files, the problem of “KB5034123 failed to install” may occur. In this case, you can run DISM and SFC scans to scan for and repair corrupted or missing system files. Here you can see how to perform a DISM and SFC scan.
Step 1. Open an elevated command prompt.
Step 2. In the command line window, type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter.
Step 3. Type sfc /scannow and press Enter.
Step 4. Once the command lines are executed, try updating to KB5034123 and check if the installation is successful.
Fix 4. Turn off Antivirus Software Temporarily
The last way to fix the “KB5034123 failed to install” issue is to disable all antivirus software, including Windows Defender, and any antivirus you have installed. Here we show you how to disable Windows Defender.
Step 1. Press the Windows + I key combination to open Settings.
Step 2. Click Privacy & security > Windows Security > Open Windows Security.
Step 3. In the new window, click Virus & threat protection, then click Manage settings under Virus & threat protection settings.
Step 4. Turn off the real-time protection and other protection temporarily. Then check if KB5034123 can be installed.
Wrapping Things Up
In a word, this post is intended to resolve the issue of “KB5034123 failed to install”. Hope the methods mentioned above are beneficial to you.
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About The Author
Position: Columnist
Shirley graduated from English major and is currently an editor of MiniTool Team. She likes browsing and writing IT-related articles, and is committed to becoming a professional IT problem solver. The topic of her articles are generally about data recovery, data backup, and computer disk management, as well as other IT issues. In spare time, she likes watching movies, hiking and fishing.