PowerShell script that calls WMI services on an RDS server to generate the number of reported RDS SALs issues by the server; creates a log file with the one line summary; runs daily.

GenerateRDSUsageLogs.ps1

# reference: https://philpug.com/2019/12/15/automating-rds-reports-for-windows-2016-and-2019/

Import-Module RemoteDesktopServices

Set-Location -Path rds:
Remove-Item RDS:\LicenseServer\IssuedLicenses\PerUserLicenseReports\* -Recurse
# note: this takes a LONG time if you have a lot of old reports

# generate the license report and return the filname generated
$fileName = (Invoke-WmiMethod Win32_TSLicenseReport -Name GenerateReportEx).FileName

# update to store in a location of your choosing
$LogFile = "C:\RDSUsageLogs\$filename.log"

# generatethe report and get the summary
$summaryEntries = (Get-WmiObject Win32_TSLicenseReport | Where-Object FileName -eq $filename).FetchReportSummaryEntries(0,0).ReportSummaryEntries

$Report = "{0}, Issued RDS Licenses: {1}" -f $($filename), $($summaryEntries.IssuedLicenses)
$Report > $LogFile

If you manage Remote Desktop Services and use Per-User licensing and have any variability in the number of users, this script can help you by automating the report generation to give you an accurate issued-license count.