Microsoft Exchange 2019 Beginners Video Tutorials Series:
This is a step by step guide on How to Restore a Mailbox Database from an Existing Backup in Exchange 2019 with Windows Server Backup Feature.
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If backup is not available then you can also use Stellar Repair for Exchange to repair corrupt EDB file: https://www.stellarinfo.com/edb-excha...
The software repairs corrupt Exchange database & export recovered Exchange database directly to PST, Live Exchange Server or Office 365.