Applies to: Windows 10, version 1903 and Windows Server version 1903, Windows 10, version 1909.
- Addresses an issue that might cause error 0x3B in cldflt.sys on some devices.
- Addresses an issue that might prevent you from creating a local user account using the Input Method Editor (IME) for Chinese, Japanese, or Korean languages. This issue occurs when setting up a new Windows device during the Out of Box Experience (OOBE).
- Security updates to Windows Virtualization, Windows Kernel, the Microsoft Scripting Engine, and Windows Server.
A large number of system level components were replaced for security reasons. Microsoft has been working with new classes of malware and they are making sure that none of them can tamper with the system.
Users should move to Windows 10 version 1909 so that the security improvements are available.
The next version of Windows 10 is now being tested to be sure it can be rolled out more easily than usual. Microsoft has also been working on the security problem and they are being being incorporated into more components as analysis of modern threats come in.
Nodersok has been a new threat that has only recently come to light. Microsoft only recently discovered it and recent update rollups have hardened Windows components against this new threat.