Windows 11 Can't lock Screen

[JohnYu]

Hello,

When I use Veyon 4.7.4.32 , I try to Lock the student's Screen, Some of the students will press Windows logo key + Tab button to open Task view before i press the lock screen button, after i press lock screen button, they can choose the new desktop and escape from the screen lock.(All Students use Laptops with mouse and also can use the Trackpad and TrackPoint, the mouse and keyboard can't use but the Trackpad and TrackPoint still work). and all of the student install Interception driver. So what shall I do to lock the screen?

Thank you in advance.