Hot to Disable Update Orchestrator Task in Win 10
https://answers.microsoft.com/en-us/windows/forum/windows_10-update/disable-update-orchestrator-from-waking-my/19272430-f41f-4947-904c-71ab34b220f0
Found this answer on another question. It worked for me, so I'm copying it here for anyone else who has this problem:
First go here to download PsTools. Extract it to a folder on your desktop.
Open Start and type cmd. Right-click the program and choose to run as administrator.
Navigate to the folder where you extracted the tools by typing "cd C:\Users\Username\Desktop\Pstools", replace Username with your username and Pstools with the folder where you extracted the tools.
When you have navigated to the correct folder, copy the following command without the quotes: "psexec.exe -i -s %windir%\system32\mmc.exe /s taskschd.msc".
Open the command window and right click, choose paste. Press enter.
Navigate to Task Scheduler Library -> Microsoft -> Windows -> UpdateOrchestrator.
Right click the task called Reboot and click on Disable.
The task should now be disabled.
Found this answer on another question. It worked for me, so I'm copying it here for anyone else who has this problem:
First go here to download PsTools. Extract it to a folder on your desktop.
Open Start and type cmd. Right-click the program and choose to run as administrator.
Navigate to the folder where you extracted the tools by typing "cd C:\Users\Username\Desktop\Pstools", replace Username with your username and Pstools with the folder where you extracted the tools.
When you have navigated to the correct folder, copy the following command without the quotes: "psexec.exe -i -s %windir%\system32\mmc.exe /s taskschd.msc".
Open the command window and right click, choose paste. Press enter.
Navigate to Task Scheduler Library -> Microsoft -> Windows -> UpdateOrchestrator.
Right click the task called Reboot and click on Disable.
The task should now be disabled.