Get-CalendarDiagnosticLog is proxied for queries within the same forest in Exchange Server 2019 and 2016 Content provided by Microsoft Applies to: Exchange Server 2019Exchange Server 2016 Select Product Version All Products Symptoms The Get-CalendarDiagnosticLog cmdlet gets proxied without checking if the destination is on a local forest or resource forest in Microsoft Exchange Server 2019 or Exchange Server 2016. Resolution To fix this issue, install one of the following updates:For Exchange Server 2019, install the Cumulative Update 4 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.For Exchange Server 2016, install the Cumulative Update 15 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. Last Updated: Dec 17, 2019 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.