I’m running Office 2003 in Windows 7. I’m aware that Office 2003 is no longer supported by MS!
I’ve noticed that in the last week or so, when I back up my Outlook personal folders, they back up as an Adobe document rather than as a .pst file as before. This also happens to the auto-archive file.
Any ideas on what the problem is and how I can correct it?
Type 'default programs' (no speech marks) into the Start search box. Go to 'associate a file type or protocol with a program'. Scroll down the list of extensions till you get to .pst. Highlight it. If we're right, it will show it as associated with Adobe Reader. Click 'change program'. With any luck, it'll suggest MS Office as the default program (else you'll have to go find outlook.exe.) Click on MS Office. That should fix it.
I highlighted .pst and clicked on Change Program, as you suggested, but it didn't offer me MS Office. So I browsed to Program Data; Microsoft; Office but there was then no obvious option to allow me to associate it with .pst.