How to automate windows update using powershell and batch script?

1. Create MSUpdates.log file in D: drive

2. Create installpatchexecute.cmd in D: drive with this content:

   pushd D:

   powershell.exe .\installpatch.ps1

   if %errorlevel% neq 0 goto error

   popd

   goto end

   :error

   echo "An error occurred" >> D:\MSUpdates.log

   exit /b 1

   :end

   exit /b 0

3. Create installpatch.ps1 file in D: drive with this content:

   netsh winhttp set proxy "xxxxxx:80" #(proxy if any)

   Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

   Install-WindowsUpdate -MicrosoftUpdate -AcceptAll -AutoReboot | Out-File "D:\MSUpdates.log" -Force

4. Create Schedule task to run on every monday at 6pm and relax :)

   pushd c:\windows\system32

   SCHTASKS /Create /S localhost /RU SYSTEM /SC WEEKLY /D MON /ST 18:00 /TN "InstallWindowsPatch" /TR "D:\installpatchexecute.cmd"