Your .pst file contains all the local Outlook folders, such as Calendar, Inbox, Tasks, Sent Items, Outbox, Deleted Items, and user-created folders. You can manually create a backup of your .pst any time by going to File > Open & Export > Import/Export and by following the steps in the Import and Export Wizard (These directions are for . but let’s face it, that’s a pain. What if you wanted to back up your .pst automatically? Well, luckily for you, Microsoft made an Add-In just for you.
Step 1: Download the Add-in from Microsoft (LINK HERE)
Step 2: After download, run the downloaded file (if you saved it as its default name that is pfbackup.exe)
Step 3: Follow the steps to complete the install of the Add-In.
Step 4: Click Finish to complete the install.
NOTE: IF YOU ARE RUNNING OUTLOOK 2010, COMPLETE THE STEPS BELOW TO INSTALL THE FIX-IT FROM MICROSOFT, IF YOU ARE RUNNING OUTLOOK 2007 OR OLDER, SKIP THESE STEPS.
Download the Microsoft Fix-It (LINK HERE)
Run the downloaded file.
Follow the steps to complete the install
Step 5: Start Outlook.
Step 6: On the Ribbon, click the Add-ins tab.
Step 7: Click the Backup button.
Step 8: Click Options and select the .pst files that you want to back up.
The Personal Folders Backup add-in can back up files to a disk. However, the add-in cannot spread the .pst file across multiple disks. When you change backup options, select a storage location that has sufficient free space to handle your whole .pst file.
Step 9: Click Save Backup. You should see a prompt explaining that Outlook will back up files on next exit. Click OK.
Step 10: Upon closing Outlook, you will see a box similar to this. This is the add-in copying your data and backing up your .pst to the directory you specified in Step 8.