In ,
jorgezayas2 typed:
I received an email on outlook and saved it to a file in my docs to
review later. Now, I tried to open a pst file in the email and was
given a message that there is no program available to open it, or
something to that effect. I have gone to the office website--no info.
I read the discussion postings here and the closest one seems to
suggest a solution through explorer somehow. I am not versed in
these issues. It would seem there would be a built-in solution for
this but apparently not. I am stuck!

Save the PST file attachment to disk, and then use File | Open | ....in
Outlook to open the file (browse to it). You cannot double-click a PST file
to open it.

Don't import anything - if you need stuff from this file, you can copy it to
your main PST file when you have both open.