Select the Reboot file without an extension, right-click it, and select Rename. %windir%\System32\Tasks\Microsoft\Windows\UpdateOrchestrator
In the case, Windows 10 automatically re-enables the Reboot task you can stop this behavior by doing the following: However, new updates won't apply, and future updates won't install until you manually reboot your computer. Once you completed the steps, your device will no longer restart after downloading and installing new updates. Right-click the Reboot task and select Disable. Important: Before proceeding note that this is a workaround not supported by Microsoft, and it can stop working at any time.
How to stop your PC from automatically restarting after installing updates
In this Windows 10 guide, we'll walk you through the steps to prevent Windows 10 from rebooting after downloading and installing an update. Fortunately, there is a workaround that can be traced to Winaero, which allows you to take full control and prevent Windows 10 to reboot on its own everytime a new update installs.