Quote:Microsoft has released the optional KB5003212 preview cumulative update for Windows 10 1909 with bug fixes and performance optimizations in the operating system.
 
This cumulative update is Microsoft's May 2021 monthly "C" preview update that allows users and admins to test out the upcoming fixes scheduled for release in the forthcoming June 2021 Patch Tuesday.
 
You can install the update by going into Settings, clicking on Update & Security, and then selecting 'Check for Updates.' As this is an optional update, you will be required to click on the download and install buttons.
 
Before you install this update, Microsoft states that you must first install the KB5001406 or KB5003244 servicing stack updates.
 
Microsoft also warns that Windows 10 1909 has reached end of servicing as of May 11th, 2021, and will no longer receive security updates.
 
"Windows 10, version 1909 reached end of service on May 11, 2021 for devices running the Home, Pro, Pro for Workstation, Nano Container, and Server SAC editions," state the KB5003212 release notes.
 
"After May 11, 2021, these devices will no longer receive monthly security and quality updates that contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10"
 
"We will continue to service the following editions: Enterprise, Education, and IoT Enterprise"