private/Tests/Test-IsWindows1126H1.ps1
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function Test-IsWindows1126H1 { <# .SYNOPSIS Returns $true when the current operating system is Windows 11 26H1 (OS build 26800). .NOTES Author: David Segura Company: Recast Software Windows 11 26H1 shipped on OS build 26800. This check is intentionally broad — it matches any 26800.x update revision. Dependencies: None #> [OutputType([bool])] param () $os = Get-CimInstance -ClassName Win32_OperatingSystem -ErrorAction SilentlyContinue return ($null -ne $os -and $os.Caption -like '*Windows 11*' -and $os.BuildNumber -eq '26800') } |