1. Go to your Outlook folder in Windows Explorer

 Note
To find your data file, Select File | Data File Management... from the menu in Outlook



2. Highlight your main data file (typically named Personal Folders)

3. Click “Open Folder”

4. Highlight all files ending in ".pst"

Warning
Make sure in particular your selection includes "outlook.pst" and "archive.pst"




5. If you have Windows Explorer configured not to show file extensions for known formats, look for Microsoft Office Outlook Personal Folders files

6. Select Edit | Copy from the menu to copy the selected files.

7. Open the folder where you want to put your backup copies in Windows Explorer.

8. Ideally, this will be on another computer, on a removable disk stored far away from your home, somewhere on the Internet, or at least on a different hard disk.

9. Select Edit | Paste from the menu to paste your .pst files to the backup location