Set up archive in Microsoft Outlook by using the Archive option on the File menu. Open Outlook 2007 and select the personal information folder (pst) you want to archive. The personal information folder will be located in the Navigation Pane.How do I open an archive file in outlook?
Open Outlook. Click on File< Cleanup tools< Archive< under archive group check the location for Archive files. Once you make a note of the archive file location to open it in Outlook, click on File< Open< Outlook Data File< Browse to the location where the archive file is saved and click on Open.