what program folder are .pst files in
To open a pst-file use; File-> Open-> Outlook Data Fileâ¦. If you backed up your pst-file to a CD-ROM or DVD, youâll first need to copy the pst-file back to your hard disk. In addition, verify that the âRead Onlyâ file property isnât enabled as Outlook needs Read and Write access to the file.