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Download KB5009566 Offline Installer, Windows 11

The KB5009566 security update is out for all Windows 11 users. Here are the direct links to download KB5009566 offline installer.

After a long break time due to Christmas and New Year, Microsoft, at last, released a new security update for Windows 11 users. As with most security updates, it doesn’t contain any additional features or improvements. That means, in theory, the update is pretty safe to install and shouldn’t cause any problems. Given Microsoft’s track record, some users might be apprehensive about installing new updates, but it should be a problem in case of security updates.

That being said, if you missed the last or last few cumulative updates, Windows 11 might automatically download them for compatibility reasons.

As for the changes in this update, the security patches are pretty small, and Microsoft did not list them separately. However, the update fixes several significant problems and improves the Windows Servicing Stack, addresses an issue Active Directory, addresses known problems with Japanese Input Method Editors (IME).

In Windows 11, the update should be downloaded and installed automatically. However, you can also force install the update. To do that, click the “Check for updates” button. Windows 11 will scan the system to download and install any available updates. If needed, you can use the below link to download the KB5009566 offline installer.

KB5009566 update Windows 11

Download KB5009566 offline installer

As always, the KB5009566 update is available as an offline installer via the Microsoft Update Catalog website.

Go to this webpage, find your Windows 11 version, and click the “Download” button next. Another window or tab will open. Here, click the available link, and the offline installer is downloaded to your computer. After downloading, double-click on the installer and follow the wizard to install KB5009566. Remember that the update will only install if it is supported. Also, it might download additional updates or dependencies if required.

KB5009566 Changelog

  • Addresses a known issue that affects Japanese Input Method Editors (IME). When you use a Japanese IME to enter text, the text might appear out of order or the text cursor might move unexpectedly in apps that use the multibyte character set (MBCS). This issue affects the Microsoft Japanese IME and third-party Japanese IMEs.

  • This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

That is it.

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