I still have my old OST file, but Outlook won't open it because the original mailbox no longer exists. Manual methods require an active profile, which I don't have anymore. I came across the DRS Softech OST to PST Converter while researching solutions. Has anyone used it for recovering emails, attachments, and folder structure from an orphaned OST file? https://www.drssoftech.com/blog/convert-ost-to-pst/