Here is how to fix missing paper sizes in layout in MS office 2016 or 2013 or 2010 within 2 simple steps.

Missing paper sizes in layout in MS Word is caused because of change in settings of  printers in the Control Panel. To resolve this issue we need to set any printer available in devices and printers option in Control Panel as default one.

Just follow below steps to fix this issue

Step 1

As shown in the below picture, open Control Panel -> go to hardware and Sound -> go to devices and printers and you can see printers available. You need to select any one of the printers and right click on it to see options in which click set as default printer.

Step 2

Close your MS Word and reopen it.

Now you can see all the paper sizes in the layout option in your MS Word as shown in the below picture.