fix(tweaks): skip missing services instead of aborting the run (#5140)

Invoke-WinUtilTweaks caught a missing service with [System.ServiceProcess.ServiceNotFoundException], a type that does not exist in .NET. PowerShell could not resolve the catch type, so the missing-service case aborted the whole tweaks job rather than warning.

Catch on the error ID the way Set-WinUtilService already does: an absent service warns and logs, and any unrelated lookup failure is rethrown. The Tweaks guide documents the skip.

docs/src/content/docs/guides/tweaks.mdx

@@ -29,6 +29,8 @@ Use the quick-selection buttons at the top of the Tweaks tab to speed up setup:
 To see what each preset includes, view [preset.json](https://github.com/ChrisTitusTech/winutil/blob/main/config/preset.json).
 :::
 
+When a listed service does not exist, WinUtil logs a warning and skips it. The remaining services and tweaks still run.
+
 :::caution
 Some tweaks take effect immediately, while others may require Explorer to restart, a sign-out, or a full reboot.
 :::

functions/private/Invoke-WinUtilTweaks.ps1

@@ -48,14 +48,21 @@ function Invoke-WinUtilTweaks {
 
         # The check for !($undo) is required, without it the script will throw an error for accessing unavailable member, which's the 'OriginalService' Property
             if ($KeepServiceStartup -AND !($undo)) {
+                $serviceName = $psitem.Name
                 try {
                     # Check if the service exists
-                    $service = Get-Service -Name $psitem.Name -ErrorAction Stop
+                    $service = Get-Service -Name $serviceName -ErrorAction Stop
                     if(!($service.StartType.ToString() -eq $psitem.$($values.OriginalService))) {
                         $changeservice = $false
                     }
-                } catch [System.ServiceProcess.ServiceNotFoundException] {
+                } catch {
-                    Write-Warning "Service $($psitem.Name) was not found."
+                    if ($_.FullyQualifiedErrorId -like "NoServiceFoundForGivenName,*") {
+                        $changeservice = $false
+                        Write-Warning "Service $serviceName was not found."
+                        Write-WinUtilLog -Level "WARN" -Component "Service" -Message "Service $serviceName was not found."
+                    } else {
+                        throw
+                    }
                 }
             }
 

pester/tweaks.Tests.ps1

@@ -177,6 +177,67 @@ Describe "Invoke-WinUtilTweaks" {
             $Name -eq "DiagTrack" -and $StartupType -eq "Disabled"
         }
     }
+
+    It "skips a missing service and applies the remaining services and tweaks" {
+        $script:sync.configs.tweaks.WPFTweaksExample.service = @(
+            [pscustomobject]@{
+                Name = "CscService"
+                StartupType = "Disabled"
+                OriginalType = "Manual"
+            }
+        ) + $script:sync.configs.tweaks.WPFTweaksExample.service
+
+        Mock Get-Service {
+            $exception = [Microsoft.PowerShell.Commands.ServiceCommandException]::new("Cannot find any service with service name '$Name'.")
+            $errorRecord = [System.Management.Automation.ErrorRecord]::new(
+                $exception,
+                "NoServiceFoundForGivenName,Microsoft.PowerShell.Commands.GetServiceCommand",
+                [System.Management.Automation.ErrorCategory]::ObjectNotFound,
+                $Name
+            )
+            throw $errorRecord
+        } -ParameterFilter { $Name -eq "CscService" -and $ErrorAction -eq "Stop" }
+
+        foreach ($tweak in @("WPFTweaksExample", "WPFTweaksServiceOnly")) {
+            Invoke-WinUtilTweaks -CheckBox $tweak
+        }
+
+        Should -Invoke -CommandName Write-Warning -Times 1 -Exactly -ParameterFilter {
+            $Message -eq "Service CscService was not found."
+        }
+        Should -Invoke -CommandName Write-WinUtilLog -Times 1 -Exactly -ParameterFilter {
+            $Level -eq "WARN" -and $Component -eq "Service" -and $Message -eq "Service CscService was not found."
+        }
+        Should -Invoke -CommandName Set-WinUtilService -Times 0 -Exactly -ParameterFilter {
+            $Name -eq "CscService"
+        }
+        Should -Invoke -CommandName Set-WinUtilService -Times 2 -Exactly -ParameterFilter {
+            $Name -eq "DiagTrack" -and $StartupType -eq "Disabled"
+        }
+        Should -Invoke -CommandName Invoke-WinUtilScript -Times 1 -Exactly -ParameterFilter {
+            $Name -eq "WPFTweaksExample"
+        }
+    }
+
+    It "rethrows service lookup errors that do not identify a missing service" {
+        Mock Get-Service {
+            $exception = [Microsoft.PowerShell.Commands.ServiceCommandException]::new("Service lookup failed.")
+            $errorRecord = [System.Management.Automation.ErrorRecord]::new(
+                $exception,
+                "ServiceLookupFailed",
+                [System.Management.Automation.ErrorCategory]::OpenError,
+                $Name
+            )
+            throw $errorRecord
+        }
+
+        { Invoke-WinUtilTweaks -CheckBox "WPFTweaksExample" } | Should -Throw -ExpectedMessage "*Service lookup failed.*"
+
+        Should -Invoke -CommandName Set-WinUtilService -Times 0 -Exactly
+        Should -Invoke -CommandName Set-WinUtilRegistry -Times 0 -Exactly
+        Should -Invoke -CommandName Invoke-WinUtilScript -Times 0 -Exactly
+        Should -Invoke -CommandName Write-Warning -Times 0 -Exactly
+    }
 }
 
 Describe "Invoke-WinUtilTweaks completion status" {