
Double click on the new task you've created and select from the General tab, select 'Run whether user is logged in or not', click OK, and enter the password for your account (use an administrative account if your user account is not a member of the Administrators group).Click on Finish button to complete the task.In the Add Arguments field enter: '-SignatureUpdate' (NO quotes), and click Next.In the Program/Script field enter: "C:\Program Files\Windows Defender\MpCmdRun.exe" (the quotes ARE required).Leave the Action on 'Start a program', and click Next.Leave the Daily setting to 'Recur every 1 days' (adjust as needed), and click Next.
Leave the Trigger setting to Daily (adjust as needed), and click Next. Give the task a name (eg 'Automatic Daily Windows Defender Updates'), and click the Next button. Right click on Task Scheduler Library, select -> Create New Basic. Here's a basic rundown of the steps required: This allows you to set whatever Windows Update settings you prefer for all of your Windows Updates - while still getting regular Windows Defender antivirus definition updates applied automatically without any user input. However, an alternativ is to create a scheduled task to run a manual Definition Update for Windows Defender, which you can schedule to run daily (or whatever you like). There's simply no way to achieve the stated goal of the question via Windows Update config, as Windows Updates in Windows 10 doesn't have this option.