Symptoms

Currently, the Start-MailboxAssistant cmdlet is not available in the Exchange Management Shell (EMS) in Microsoft Exchange Server 2019 until you add a plug-in. This update makes the Start-MailboxAssistant cmdlet available without having to add the plug-in.

Resolution

To fix this issue, install the following update:

Cumulative Update 11 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019

References

Learn about the terminology that Microsoft uses to describe software updates.

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