KB5015814 can’t install on a Windows 11 PC? How to fix!

Microsoft has released update KB5015814 with several security improvements and bug fixes. You can download the KB5015814 using the Windows update which can be found in the Settings.

KB5015814 is a security update, you can either download it using Windows update or manually using the update catalog. KB5015814 will update Windows 11 to build Windows 11 22000.795.

When you have issues downloading and/or installing KB5015814 in Windows 11, this guide will help you resolve update issues.

KB5015814 can’t install on a Windows 11 PC? How to fix!

Windows update troubleshooter

In Windows, there are several tools available to solve problems. These are trouble-shooters. To resolve issues with the KB5015814 update, you can run the Windows update troubleshooter to automatically fix this error message.

Right-click on the Start button. Click on Settings from the menu. Then click on System on the left and navigate troubleshoot at the bottom.

Then click on other troubleshooters, and to the right of “Windows update” click on the Run button to launch the Windows update troubleshooter.

Start Windows update troubleshooter

Problems are being identified with Windows update. However, this may take a while.

If the Windows update has problems, the issues will be fixed automatically. If you want more information about the troubleshooting, click on the “View Detailed Information” link.

Windows update resolved issue

To exit click on the Close button. Now check for Windows updates again.

Perform an SFC and DISM scan to fix KB5015814 update error

If you get an error message in Windows update when downloading or installing update KB5015814. There might be some Windows components or system files that may be damaged. To rule out that damaged files are the problem, you can run SFC and DISM.

SFC and DISM are recovery process files that can repair Windows components automatically.

Right-click on the Start button. Click Windows Terminal (administrator) in the menu.

In the Terminal window, to begin, type the following command:

sfc /scannnow

Should SFC have found and repaired problems, you will find the log file in the location: C:\Windows\Logs\CBS\CBS.log

Once SFC has completed, type the following command immediately after to run DISM:

DISM /online /cleanup-image /restorehealth

Running these Windows recovery commands takes some time. Therefore, do not interrupt these processes.

Start Windows installer service

All downloaded and installed updates in Windows use the Windows installer service.

Windows Installer is an installation and configuration service that comes with Windows. The Installer service enables customers to provide better deployment and a standard component management format. Starting this “Installer” service can update issues with KB5015814.

Right-click on the Start button. Click on Run from the menu. In the run window type: services.msc.

Search for the “Windows installer” service and right-click on it. Then, in the menu, click Start.

Start Windows installer service

Reset the Windows update service

Sometimes there are problems with Windows update that can’t be fixed overnight. Restoring the update service to default values (“a reset”) may solve the problem. If nothing works anymore, then this is often the solution.

Download Windows update reset tool

Install update manually

Suppose the KB5015814 update cannot be installed because an error with KB5015814 is displayed. In that case, you can still install the update in question manually.

The advantage of manual installation is that the Windows update service is spared. If you have problems with Windows update, install the update manually.

First, you need to determine what the last update is. To do this, go to the Microsoft update history website. Then, search for the latest update at the top left under “Update History”.

Windows update history

Note down the KB5015814 number and search for the number in the Microsoft update catalog. Then download the update for your appropriate computer architecture and install the update.

I hope to have helped you with this guide. Thank you for reading!

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