Summary
Your computer does not automatically shut down after running a scheduled scan. Checking the Security Server console, Scheduled scan settings are properly configured.
This happens when the computer is locked before the scheduled scan is finished and the shutdown command is triggered. This is a Windows operating system behavior, where the computer ignores the shut down command when a computer is locked.
Details
To resolve the issue, shut down your computer manually after the scheduled scan is completed if automatic lock is enabled.
Note: If you need more help with checking the automatic lock, refer to this article: Use your Windows password for your screen saver password
Note: If you need more help with checking the automatic lock, refer to this article: Use your Windows password for your screen saver password