Windows Server 2022 gets this year's first Patch Tuesday update (KB5009555)

After addressing a critical issue with Remote Desktop via an out-of-band update, Microsoft has released this year’s first Patch Tuesday for Windows Server 2022. While the KB5009555 update is a routine servicing stack update for Windows 10, the update meant for Windows Server 2022 includes quality improvements.

Microsoft has released the Windows 10 servicing stack update - 20348.403 in addition to the Patch Tuesday security update for Windows Server 2022 Build 20348.469. According to the official Microsoft Support Page, the update should ensure Active Directory (AD) attributes are being written properly, and should also fix the erratic behavior observed while using Japanese Input Method Editors (IME).

The official page confirms the Patch Tuesday update for Windows Server 2022:

Addresses an issue that prevents Active Directory (AD) attributes from being written properly during a Lightweight Directory Access Protocol (LDAP) modify operation when you make multiple attribute changes.

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.

In addition to the quality improvements, Microsoft has also released Windows 10 servicing stack update - 20348.403. “This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.” Essentially, this is a routine update that Microsoft occasionally sends out to ensure Windows 10 PCs have a "robust and reliable servicing stack" to reliably accept, receive, and install updates.

Admins in charge of Windows Server 2022 should be aware of a minor issue with the update, but Microsoft already has a simple workaround involving tweaking the Group Policy Editor. Admins must also install KB5005039, dated August 10, 2021, before installing the latest cumulative update.