Symptoms

In Microsoft Exchange Server 2019 or Exchange Server 2016, assume that you run the Delivery Reports tool in Exchange Admin Center (EAC) and then open the delivery report. If the message that's being tracked is a meeting invite that includes a room resource, opening the report throws an exception that resembles the following:

Server ServerName.contoso.com in domain contoso.com encountered an unexpected error. Diagnostic information for this error: The message-tracking data on server ServerName.contoso.com had invalid data in column 19 for this message. Event "PROCESSMEETINGMESSAGE" will be ignored.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Resolution

To fix this issue, install one of the following updates:For Exchange Server 2019, install the Cumulative Update 1 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.

For Exchange Server 2016, install the Cumulative Update 12 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.

References

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

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