Recovering a corrupt OST file in Outlook usually means recreating it from the server or using Microsoft's Inbox Repair Tool. If server recovery doesn't work or if the file is orphaned, you can convert the OST to PST with a trusted tool. This can save your emails, contacts, calendar, and attachments without needing the original profile. https://fortunetelleroracle.com/software/how-can-i-recover-a-corrupt-ost-file-in-outlook-1197939