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The Export-ModernPublicFolderStatistics.ps1 script doesn’t work in Microsoft Exchange Server 2019, and you receive an error message that resembles the following:



To fix this issue, install the Cumulative Update 5 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.​


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


To work around this issue, update the script with below changes:

$script:Exchange16MajorVersion = 15;

$script:Exchange16MinorVersion = 1;

$script:Exchange16CUBuild = 669;

$script:Exchange17MajorVersion = 15;

$script:Exchange17MinorVersion = 2;

$script:Exchange17CUBuild = 196;


$hasMinE16Version = (($version.Major -eq $script:Exchange16MajorVersion) -and

($version.Minor -eq $script:Exchange16MinorVersion) -and

($version.Build -ge $script:Exchange16CUBuild));

$hasMinE17Version = (($version.Major -eq $script:Exchange17MajorVersion) -and

($version.Minor -eq $script:Exchange17MinorVersion) -and

($version.Build -ge $script:Exchange17CUBuild));

if (!$hasMinE15Version -and !$hasMinE16Version -and !$hasMinE17Version)


$failedServers += $server.Fqdn;

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