Stellaost pst software can convert all ost files. Stellaost to pst software converts corrupted files into office365 accounts. Stella ost converter software can convert all damaged ost files into a format that is compatible with Office365. This software converts corrupted ost file data into pst files.

You can find more information at this link.

https://www.stelladatarecovery.com/ost-to-pst-recovery.html