Hi, I'm John!
Thank you for reaching out to the Community. I'm here to help you with this.
Does this happen when you're in full-screen mode? Try pressing the Windows key on your keyboard, does the taskbar appear?
Check if auto-hide is enabled:
> Press Windows + I to open Settings.
> Go to Personalization > Taskbar > Click "Taskbar behavior" to expand the section.
> Look for Automatically hide the taskbar, make sure there's No check mark on it. Disable if it is enabled.
If issue persists or if it is already turned off, Restart File Explorer:
> Press Ctrl + Shift + Esc to open Task Manager.
> Find Windows Explorer, right-click it, and choose Restart.
Let me know how it goes.
If the issue persists, please provide more details by answering my questions.
Click "Reply" below to let me know.
Regards,
John J.D.