The steps below should help you to add your archive folder.

Outlook  

  • Click File  - 
  • Account Settings button
  • Account Settings... in drop-down men

New window will open

  • Select the Data Files tab
  • click the Add button
  • Navigate to your .pst file and click OK. 

You should now see your archive listed in the Mail pane on the left






Archive

Folder

Missing

Folder Pane