properties window

this is driving me crazy…i seem to have “lost” the properties window from the right of screen.Can only access it from the header bar.How can i return it to the right of screen?

If you have maximised the view use Ctrl+Up Arrow to get back to regular view
Split the screen and set one area to properties area
Save file and use New File and load your blend file with the ‘Load UI’ option unchecked
Show us what you see

Ctrl up resolved issue,thanks