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fix(setup): Measure-Object .Sum null-dereference under Set-StrictMode -Version Latest

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PS 5.1 treats GenericMeasureInfo.Sum as absent (not null) when the input pipe
is empty. StrictMode throws 'property Sum cannot be found'. Replace Measure-Object
with an explicit foreach loop for SoftwareDistribution size reporting.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Simone
2026-05-10 17:17:41 +02:00
parent edce871644
commit ee7f406f2a
1 changed files with 5 additions and 1 deletions
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template/Setup-WinBuild2025.ps1
+5 -1
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@@ -1031,7 +1031,11 @@ Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\wuauserv' `
# normal and harmless: WU is permanently disabled by Step 6b (service Disabled + GPO keys). # normal and harmless: WU is permanently disabled by Step 6b (service Disabled + GPO keys).
# Report remaining size as informational only. # Report remaining size as informational only.
$sdFiles = Get-ChildItem 'C:\Windows\SoftwareDistribution\Download' -Recurse -File -Force -ErrorAction SilentlyContinue $sdFiles = Get-ChildItem 'C:\Windows\SoftwareDistribution\Download' -Recurse -File -Force -ErrorAction SilentlyContinue
$sdMB = [math]::Round(($sdFiles | Measure-Object -Property Length -Sum).Sum / 1MB, 1) # Avoid Measure-Object .Sum: under Set-StrictMode -Version Latest, PS 5.1 treats the
# nullable Sum property as absent when the pipe is empty, throwing "property not found".
$sdBytes = [long]0
if ($sdFiles) { foreach ($f in $sdFiles) { $sdBytes += $f.Length } }
$sdMB = [math]::Round($sdBytes / 1MB, 1)
Write-Host " SoftwareDistribution\Download: $($sdFiles.Count) file(s), ${sdMB} MB remaining (WaaSMedicSvc best-effort, WU is disabled)." Write-Host " SoftwareDistribution\Download: $($sdFiles.Count) file(s), ${sdMB} MB remaining (WaaSMedicSvc best-effort, WU is disabled)."
Assert-Step 'Cleanup' 'wuauserv StartType Disabled after cache clear' { Assert-Step 'Cleanup' 'wuauserv StartType Disabled after cache clear' {