Microsoft Outlook uses an offline storage folder (OST file) when the Outlook application is unplugged from the Exchange server. After the connection to the server is re-connected, Outlook synchronizes all offline performed actions in the OST file with the Exchange server. Different factors can lead users to OST corruption, such as faulty sectors on the hard drive, incompatible Outlook add-ins, large-size OST files, etc.

Manually, there is a native tool available named scanost.exe tool, but it doesn’t work perfectly. The best and fastest way to recover inaccessible OST data is to use a professional third-party OST repair tool such as Shoviv Exchange OST Recovery Tool.

Shoviv Exchange OST Recovery

Shoviv offers the best OST repair tool. It is the most convenient solution to repair inaccessible and corrupted OST files. Shoviv OST Recovery Tool can manage multiple OST files and gets the job done very quickly.

Highlighted features of the OST Repair Tool:

• It can completely extract OST emails, tasks, events, contacts, calendars, and more attributes from corrupt OST files without any issue.

• This OST repair tool efficiently scans and recovers multiple OST emails, files and mailboxes at once without any flaws.

• After recovery of corrupted OST files allows converting them into the PST file format with the maintained hierarchical structure and data integrity.

• It enables to save OST file items to EML, MSG, HTML, vCal, vCard, etc.

• Users can search for items with the Subject, From, To, and other fields.

• Allows users to convert and save OST files to Office 365 mailboxes and Live Exchange Server with Mapping.

• There is a free demo version available to evaluate the features of this OST repair tool that allows processing for the first 50 items per folder.

Online Resources: 

1. https://globalhealthtrainingcentre.tghn.org/community/members/461456/
2. https://www.waitinginthewings.co.uk/forum/performing-arts-forum/how-to-recover-or-repair-ost-files-from-corruption
3. http://www.theblueknight.host-ed.me/forum/index.php/topic,7139.0.html
4. https://curia.ideas.aha.io/ideas/CURIA-I-618
5. https://participation.bordeaux-metropole.fr/profil-public/repair-ost-file
6. https://forums.joeuser.com/user/7102225
7. https://techsite.io/p/2510950/t/repairing-corrupted-ost-files-outlook-2016