Whilst Windows Updates tends to serve It's purpose well In keeping your PC safe and secure with the very latest security patches and fixes, not everyone enjoys the Inconvenience of having to shutdown their system, thus losing active user-sessions In the process. Despite the fact that the Windows Update feature In Control Panel Is no longer available In Windows 10, fortunately, there Is a very simplistic method to disable updates altogether manually via user Intervention.
Regardless what edition of Windows 10 you're running, every OS has what's called the "Windows Update Service", which (as It's name Implies) Is responsible for downloading & Installing updates via Microsoft's official website.
What we're going to do, Is both stop & disable It, hence will prevent your operating system from automatically checking and downloading Windows Updates. So let's get to It.
Open the Windows Run menu, enter "services.msc" (no quotes) and hit OK.
Once the Window opens, scroll down until you locate "Windows Update" (as arrowed below) and double-click It.
Next to the "Startup type" select "Disabled" via the drop-down menu. Under "Service status", click "Stop" and then press OK.
When you see "Disabled" as the Startup Type, all has gone according to plan.
At times, the Windows Update service tends to re-enable Itself, particularly after you've rebooted your PC. I recommend to periodically check It and make sure It's always set to "Disabled". I personally have the above window minimized, and check It every now and then. I suggest you do the same.