Installation via Windows Update
Cumulative update KB4486458 for PC is installed automatically through Windows Update. To check, go to Settings > Update and Security and click Check for Updates. To complete the installation, you will need to restart the computer.
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). Installing servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft security fixes.
You do not have to restart the computer after you apply this update.
You can download the file below:x64 download update
x86 download update