Microsoft has released KB4457128 cumulative update for Windows 10 April 2018 Update Version 1803. After installing this update, the complete build number of Windows will become 10.0.17134.285. It is recommended that you should always keep your system up to date.
Security updates to Internet Explorer, Microsoft Edge, Microsoft scripting engine, Windows graphics, Windows media, Windows Shell, Windows cryptography, Windows virtualization and kernel, Windows datacenter networking, Windows hyper-V, Windows Linux, Windows kernel, Microsoft JET Database Engine, Windows MSXML, and Windows Server.
This update will provide protection against Spectre variant 2 vulnerability in ARM based Windows 10 devices.
Fixes an issue with Program Compatibility Assistant (PCA) which starts using excessive CPU time and resources.
It also fixes the dreaded task scheduler zero-day vulnerability. This is a severe vulnerability in which the attacker could get administrative access to the system and can view, change and delete system data as well as create new user with administrative privileges.
You must restart your computer to finish installing this update even if Windows is not asking you to restart. This is because Windows will not update its build number until it’s restarted.
If you have configured your system to not download and install the next major build of Windows 10 Version 1809, then you must revisit the settings again to make sure that the settings are intact and have not been reverted by this update.
Some users have also reported that their programs are taking 5 to 7 seconds of delay after installing this update. This performance lag could be temporary but I have also encountered this delay issue on my production system.
How to get KB4457128 update for Windows 10 Version 1803
Before installing any Windows Update, it is always recommended to create a restore point for your safety.
Create a restore point
This should be the default case before installing any update or software on your system. At the very least, if the system get bricked after installing an update, you will be able to revert back to the working point. On the System Protection tab, enable System Restore and create a restore point manually.