If you want to recover a mailbox or mailbox items (such as a folder, a public folder, a contact, or a calendar entry) from Exchange database backup jobs, then verify that the MediaAgent has the required software.
The MediaAgent must have the following software:
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The Exchange package (the package can be installed in restore-only mode)
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Microsoft Outlook (64-bit) all versions for PST restores.
Microsoft Outlook (64-bit) 2019 version for restoring to a mailbox.
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Microsoft .NET Framework 4.6.2.