Exchange 2016: AuditStorageState could not be converted to the AuditStorageState type

Today a mailbox on Exchange 2016 greeted me with the following error message: Here is the exact wording of the message: The object "frankysweb.de/user/NoReply" has been corrupted or is not compatible with Microsoft support requirements and is in an inconsistent state. The following validation error: The AuditStorageState property could not be converted to the AuditStorageState type. Error converting the string ... Read more