Laurawilliams
Member
Opening an OST (Offline Storage Table) file directly in Outlook is not possible because OST files are encrypted and permanently linked to the Outlook profile and Exchange or Office 365 account that created them. Outlook only recognizes an OST file when the same email account is configured and actively connected.
If the original Exchange or Office 365 account is still available, the simplest solution is to reconfigure that account in Outlook. Once the account is added, Outlook automatically recreates and links the OST file, allowing full access to mailbox data.
However, if the account has been deleted, is no longer accessible, or the OST file is orphaned or corrupted, the most effective solution is to convert the OST file into PST format using a professional ATS OST to PST converter. After conversion, the PST file can be imported into Outlook using the Import/Export wizard, giving you complete access to emails, contacts, calendars, and attachments without server dependency.
This method ensures secure, long-term access to your Outlook data across all Outlook versions.
If the original Exchange or Office 365 account is still available, the simplest solution is to reconfigure that account in Outlook. Once the account is added, Outlook automatically recreates and links the OST file, allowing full access to mailbox data.
However, if the account has been deleted, is no longer accessible, or the OST file is orphaned or corrupted, the most effective solution is to convert the OST file into PST format using a professional ATS OST to PST converter. After conversion, the PST file can be imported into Outlook using the Import/Export wizard, giving you complete access to emails, contacts, calendars, and attachments without server dependency.
This method ensures secure, long-term access to your Outlook data across all Outlook versions.