As well as what @tomchai said, if restarting the '''Shell Experience Host''' does not fix the issue, try restarting File Explorer.
You can do this by:
# Opening '''Task Manager''' (Crtl + Shift + Esc)
# Either Scroll Down or open '''File Explorer''' and click on it.
# Click '''Restart''' on the bottom-right corner of '''Task Manager'''
''If you need any help please reply to this answer.''
Thanks,
''John''