How to fix
KB5019509 fails to install
on Windows

I am not sure how to install the newest KB5019509 update for Windows 11, as it stops by the end and says that updates have failed. Could you provide me with some solutions to the update failure maybe?

Most users do not have to do anything much when it comes to continual Windows updates, as long as they are set to be delivered automatically. In those cases, the operating system updates as soon as it it launched or whenever new patches are released. These updates come around on every second Tuesday of every month in a process known as Patch Tuesday.

In some cases, Microsoft releases out-of-band updates on the third week of the month, which is the case with the KB5019509 update, which was set to be released on December 18, 2022 for all computers running Windows 11 version 22H2 (OS build 22621.675). The latter was a major leap between the patches, as it introduced a myriad of new features and improvements.

KB5019509 is yet another important update that introduces the much anticipated Windows Explorer features. Possibly what users were the most excited about was the new File Explorer tabs feature, which allows using one window when managing several different directories or dealing with specific files.

The update also introduced other improvements to the built-in app, including pinning important files for quick access, improvements to OneDrive and how it is displayed, and much more. Unfortunately, some people said that KB5019509 fails to install, resulting either in error code or simple message that says update failed.

This situation is not unique, and update failures already happened with KB5012643, KB5021234, KB5021233, and many others. In these instances the first thing to do is running the built-in troubleshooter, as it can usually pinpoint at issues and possibly resolve them automatically.

If that does not help, there are several other methods that should help you fix Windows update installation failures - we provide them below. Before proceeding, we recommend trying an automatic PC repair tool [d1], as it can find and replaced damaged or corrupted files for you quickly and effectively.

1. Start with Windows Update Troubleshooter

As we offer in any other of our guides when dealing with Windows update failures, starting with a troubleshooter is a good idea. Follow these steps:

• Type troubleshoot in Windows search and press Enter or go to Start > Settings > System > Troubleshoot
• From the list of Options, pick Other trouble-shooters
• Scroll down to locate the Windows Update and click Run
• Wait for it to finish, then apply changes and reboot the system.

2. Check BITS and Windows update services

Another reason for failing updates is incorrectly configured Windows services that provide operational support for automatic updates. You need to ensure that BITS and Windows update services are running. If they already are, restarting them might help.

• Type Services in Windows search and press Enter
• In the Services window, scroll down to locate Background Intelligent Transfer Service (BITS)
• If the service is already running, right-click and select Restart
• If the service is not running, double-click it to open Properties
• Under the Startup type, pick Automatic from the drop-down menu
• Click Start, Apply, and OK
• Do the same with the Windows update service.

3. Run SFC and DISM

• Type cmd in Windows search
• Right-click on Command Prompt and pick Run as administrator
• When User Account Control shows up, pick Yes
• Use the following command lines, pressing Enter after each:
  sfc /scannow
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth
• Restart your computer.

4. Reset Windows Update Components

• Open Command Prompt as administrator
• Run the following commands, pressing Enter after each:
  net stop bits
  net stop wuauserv
  net stop appidsvc
  net stop cryptsvc
  Del "%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*.*"
  rmdir %systemroot%\SoftwareDistribution /S /Q
  rmdir %systemroot%\system32\catroot2 /S /Q
  regsvr32.exe /s atl.dll
  regsvr32.exe /s urlmon.dll
  regsvr32.exe /s mshtml.dll
  netsh winsock reset
  netsh winsock reset proxy
  net start bits
  net start wuauserv
  net start appidsvc
  net start cryptsvc
• Restart your computer.

5. Download and install the update manually

Your other option to implement the update is by downloading and installing it manually.

• Open your browser and go to Microsoft Update Catalog
• In the search box, type in KB5019509 and press Search
• Find the correct version of the update for your operating system (to check this, right-click on Start and pick System. Under Device specifications and check the System type) and click Download
• Use on-screen guidelines to finish the installation process and restart your PC.

6. Use Windows installation media

You can try installing the most recent version of Windows with the help of Windows installation media. Before proceeding, disconnect all unnecessary peripherals such as printers or scanners and disable/uninstall third-party security software.

• Visit the official Microsoft website and download the Windows installation media
• Double-click the installer and select Yes when UAC shows up
• Agree to the terms and click Next
• Select Upgrade this PC now and select Next
• Windows will now download all the necessary files – it might take sometime
• Agree to terms once again and click Next
• Before installing, make sure that you are happy with your choices (otherwise, you can click Change what to keep option)
• Click Install to begin the upgrade process
• Your computer will restart as required.