This has to be disabled in task scheduler and I go a step further and block it with the firewall also. Here is the script that I used in my environment:
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@echo off
REM Stop Update Assistant if running
taskkill -f -im UpdateAssistant.exe
taskkill -f -im UpdateAssistantCheck.exe
taskkill -f -im Windows10Upgrade.exe
taskkill -f -im Windows10UpgraderApp.exe
REM Block Update Assistant with Windows Firewall
netsh advfirewall firewall delete rule name="Windows 10 Update Assistant" dir=in
netsh advfirewall firewall delete rule name="Windows 10 Update Assistant" dir=out
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=in action=block program="C:\Windows\UpdateAssistant\UpdateAssistant.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=out action=block program="C:\Windows\UpdateAssistant\UpdateAssistant.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=in action=block program="C:\Windows\UpdateAssistant\UpdateAssistantCheck.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=out action=block program="C:\Windows\UpdateAssistant\UpdateAssistantCheck.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=in action=block program="C:\Windows\UpdateAssistant\Windows10Upgrade.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=out action=block program="C:\Windows\UpdateAssistant\Windows10Upgrade.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=in action=block program="C:\Windows\UpdateAssistantV2\Windows10Upgrade.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=out action=block program="C:\Windows\UpdateAssistantV2\Windows10Upgrade.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=in action=block program="C:\Windows10Upgrade\Windows10UpgraderApp.exe" enable=yes
netsh advfirewall firewall add rule name="Windows 10 Update Assistant" dir=out action=block program="C:\Windows10Upgrade\Windows10UpgraderApp.exe" enable=yes
REM Disable Update Assistant Scheduled Tasks
c:\windows\system32\schtasks.exe /change /tn "Microsoft\Windows\UpdateOrchestrator\UpdateAssistant" /DISABLE
c:\windows\system32\schtasks.exe /change /tn "Microsoft\Windows\UpdateOrchestrator\UpdateAssistantAllUsersRun" /DISABLE
c:\windows\system32\schtasks.exe /change /tn "Microsoft\Windows\UpdateOrchestrator\UpdateAssistantCalendarRun" /DISABLE
c:\windows\system32\schtasks.exe /change /tn "Microsoft\Windows\UpdateOrchestrator\UpdateAssistantWakeupRun" /DISABLE
REM Remove Upgrader Application
IF EXIST "C:\Windows10Upgrade\Windows10UpgraderApp.exe" (
"C:\Windows10Upgrade\Windows10UpgraderApp.exe" /ForceUninstall
timeout /t 30
)
exit