KB5004476 is an optional update, which means it won’t be installed automatically. You can follow our guide to download and install this update on a computer running on version 2004 and newer.
Release Date:6/10/2021 Important: No. Version: OS Builds 19041.1055, 19042.1055, and 19043.1055
Version | Build number |
---|---|
2004 | 19041.1055 |
20H2 | 19042.1055 |
21H1 | 19043.1055 |
Download build 190xx.1055 aka KB5004476
- Open Windows settings, press CTRL + I
- From Update & Security > Windows update.
- Click on Scan for updates.

- You might see Optional quality update available.
- Click on Download and install button.
manually installing KB5004476 on your computer
Download KB5004476 for from Microsoft update catelog site.
- Open the link given above, find appropriate version and click on Download button.
- A new window will open with the download link (.MSU extension).
- Save this KB5004476 on your computer and run it.
Applies to: Windows 10 version 2004, v20H2, v21H1 and Windows server.
more about this culumative update KB5004476
In this case, KB5004476 is offered as an optional update, meaning it won’t be pushed automatically through Windows Update. However, Windows Update offers a manual search feature to check for updates, you can also download Windows Update separately from the Microsoft Update Catalog.
A Microsoft Store installation bug was resolved in the Windows 10 cumulative update KB5004476. It affects Windows 10 version 2004, 20H2, and 21H1.
“Fixes an issue where starting or installing an Xbox Game Pass game can redirect you to the Microsoft Store page. You may also receive an error code 0x80073D26 or 0x8007139F. According to Microsoft’s official release notes, “for more information, see KB5004327.”.
It is still an optional update
This cumulative update will also improve the servicing stack, notes the company.
You can update your system with KB5004476 if you have problems installing games from the Microsoft Store, however, the update is optional.
A quality improvement has been made to the Windows servicing stack, which is responsible for installing Microsoft updates. SSUs (Service stack updates) ensure your devices are able to receive and install Microsoft updates by providing a robust and reliable servicing stack. As part of Patch Tuesday 2021 on July 13, Windows 10 will also receive an out-of-band fix. All updates will be automatically downloaded from Windows Update.