How To Turn Off Windows 10 Updates Permanently (Engish)

2] Change WU settings using the Group Policy Editor
1] Disable Windows Update & Windows Update Medic Services
https://www.thewindowsclub.com/turn-off-windows-update-in-windows-10

Method 2. Disable all Windows Update Services and Tasks.
Step 1. Disable the Windows Update Service.
Step 2. Disable the Windows Update Medic & the Update Orchestrator Services through Registry.
Step 3. Disable Windows Update Tasks.
https://www.wintips.org/how-to-turn-off-windows-10-updates-permanently/

UPDATE 17-07-2019:
cd \programs\PSTools
psexec -accepteula -s -h -i %windir%\system32\mmc taskschd.msc /s

https://www.tenforums.com/general-support/98784-no-permission-disable-task-task-scheduler-2.html

:rem -accepteula prevents eula gui popup; yes, annoying
:rem -s runs in system account (key to this whole thing)
:rem -h elevated token (privileges) (don't need, but is often helpful)
:rem -i open window on existing desktop / windows screen. this is a gui so need this
psexec -accepteula -s -h -i %windir%\system32\mmc taskschd.msc /s

This opened the Task Scheduler in a window on my screen running under the NT AUTHORITY\SYSTEM user.

Then I was able to disable the \Microsoft\Windows\UpdateOrchestrator\Reboot task. (And set the trigger time for 2020)

psexec exiting with error code 0 means success.
https://docs.microsoft.com/en-us/sysinternals/downloads/pstools
Downloand Pstools (Direct link)
END OF UPDATE

UPDATE 29-07-2019
In regedit go to
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
AlwaysAutoRebootAtScheduledTime 0
AUOptions 2
AUPowerManagement 0
AutoInstallMinorUpdates 0
NoAUShutdownOption 0
NoAutoRebootWithLoggedOnUsers 1
NoAutoUpdate 1
ScheduledInstallDay 7
ScheduledInstallTime 3
UseWUServer 0

How To Turn Off Automatic Updates In Windows 10 Using Registry
https://www.intowindows.com/how-to-turn-off-automatic-updates-in-windows-10-via-registry/


END OF UPDATE

UPDATE 25-10.2020:
In regedit go to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
Use following values of your choice and click “OK”:

0 = Boot
1 = System
2 = Automatic
3 = Manual
4 = Disabled

DosSvc
WaasMedicSvc
UsoSvc
BITS

https://www.digitalwelt.org/en/tips/software/disable-services-state-through-regedit
https://thegeekpage.com/windows-update-medic-service-waasmedicsvc/

END OF UPDATE