Mounting an Exchange 2019 CU3 or newer database, from a recovery point, in the Mail Restore application or from the Core UI, displays no emails under Inbox to restore. Only Items in 'Send Items' are visible and no options to select any emails for restore.
In Mail Restore you may see the below Error:
"Invalid dictionary entry: data format in compressed type should match data format at value offset. (0x80131509)"
In AppRecoveryMR and MailboxRestoreHost logs, following errors are logged:
Due to changes in Exchange 2019 CU3 and on, a patch is required on the Rapid Recovery Core in order for mailbox restores to work properly.
This issue is being tracked as RR-110102
A patch has been created to resolve this issue and allow restores from Exchange 2019 CU3 and newer databases in Rapid Recovery 6.4.0 Core.
Patch Disclaimer:
Workaround:
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