For most people, Windows updates are installed automatically with little to no efforts by users. In some cases, though, Windows 10 may fail to download and install the cumulative updates (monthly updates) or Windows Defender virus definitions.

If you are experiencing issues with Windows Update or you have multiple PCs, you might want to use the Windows Update Catalog to download and install Windows updates manually.

In this guide, we will explain the steps required to install Windows 10 cumulative updates manually if you are unable to do so via the normal Windows Update procedure.

How to install Windows 10 updates manually

Visit the Microsoft Update Catalog website in any web browser. Click on the search bar (located at the top right-corner), type the KB number of the Windows Update package you wish to install, and press enter. The result page will list down various versions of Windows 10 update, including 32-bit, 64-bit, ARM, Windows 10 in S mode and others. You have to select the correct version after verifying your system configurations from Settings > System > About. Click the Download button and a popup window will appear. In the popup window, click the .msu file link to download it.

When the file has finished downloading, double-click on the .msu file and Windows will install the new update.

A restart is typically required to finish the installation process and apply any changes.