I had an autoarchive running every month for a last year.
Then it was saved into pst archive files but yesterday I noticed that they disappeared.
I can still see them in a default folder but when attempting to attach them back to Outlook it says
The file c:\users\user103\AppData\Local\Microsoft\Outlook\archive1.pst is not a personal folders file.
How do I fix this? Is auto-archiving a good way to reduce a size of my mailbox? Currently my mailbox exceeded 5GB.
I appreciate your help.