How to manually download and install Windows 10 cumulative updates

Windows 10 as a service is updated frequently with
improvements, fixes, and security patches. On every second
Tuesday of the month, a compulsory Windows 10 update is
released and optional updates are also shipped every month.

Windows Updates are normally installed automatically in the
background. If the system finds any updates, it usually
downloads and installs them automatically, but sometimes
updates may not appear on your computer.

Fortunately, Microsoft allows users to manually download
Windows 10 cumulative updates and security-only updates. You
can use Microsoft’s Update Catalog to quickly install a
cumulative update on your PC if it’s not showing through the
preferred Windows Update method.

In this article, we’ll walk you through the steps to download
and install Windows 10 cumulative update manually.

How to download cumulative updates manually on Windows 10

  1. Go to Microsoft Update
  2. You have to search for the update using its Knowledge Base
    reference number (KB number). For example, KB4505903.
    Microsoft Update Catalog
  3. You can find KB number when we publish a new article about
    a new update or you can also search on Microsoft’s support
  4. After identifying the KB number, type it in the search bar
    located at the top corner.
  5. Click the Download button for the version of Windows 10 you
    are using. You can find your system configuration under ‘System
    type’ on Settings > System > About page.
    Microsoft Update Catalog Search
  6. A pop-up window will appear after the download button is
  7. Click on the .msu file to download it.

You can double-click a .msu file to manually install the update
manually and a system reboot is required to finish the

Verify the installation

To see if an update is installed, go to Settings > Update &
Security > Windows Update and view update history.

Look for this particular update in the list and if it’s there,
it has been successfully installed. You can also verify it
from Control Panel > Programs > Programs and
Features > Install Updates.


After traditional Windows Update settings, Microsoft Update
Catalog is the most reliable way to install a cumulative update
on Windows 10.

Additionally, you can also download certain device drivers and
firmware updates from the Microsoft Update Catalog.

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