Consolidate Entra ID PowerShell scripts

Entra ID/Remove Azure AD Duplicate Devices - Windows.ps1

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+Connect-MgGraph
+# Find duplicate devices by pulling all and grouping by DisplayName, then only keep a list where there are more than one entries with the same display name.
+$DuplicateDevices = Get-MgDevice -All | Group-Object DisplayName | Where-Object {$_.Count -gt 1 -and $_.OperatingSystem -eq "Windows"} | Sort-Object Count
+
+foreach ($group in $DuplicateDevices) {
+    # For each group of duplicate DisplayName,
+    # Expand the group object and sort it by the approximate last sign-in timestamp,
+    # Then exclude the most recently active one so it is kept when the rest are removed.
+    $OldDuplicates = $group | Select-Object -ExpandProperty Group | Sort-Object ApproximateLastSigninDateTime | Select-Object -SkipLast 1
+    # Having excluded the most recent object, remove each "old" duplicate device in the group.
+    $OldDuplicates | ForEach-Object { Remove-MgDevice -DeviceId $_.Id }
+}