Install-Microsoft-Store.ps1 - Add use existing files mode

Adds parameter to use previously downloaded installer files.

Installer Scripts/Install-Microsoft-Store.ps1

@@ -4,17 +4,40 @@
 
 # Author: ThioJoe
 # Repo Url: https://github.com/ThioJoe/Windows-Sandbox-Tools
-# Last Updated: August 10, 2025
+# Last Updated: February 12, 2026
 
 param(
     # Optional switch to output the generated XML files to the working directory
     [switch]$debugSaveFiles,
+    
     # Optional switch to skip the installation of Microsoft Store, but still download the files
     [switch]$noInstall,
+
     # Optional switch to skip the download and install, but still show the packages found 
-    [switch]$noDownload
+    [switch]$noDownload,
+
+    # Optional path to a local directory containing the installation files. If provided, the download steps will be skipped.
+    #   - Just copy the entire "MSStore Install" folder with the files the script normally downloads, and put it in your mounted folder to avoid having to re-download it.
+    #        - You can find the "MSStore Install" folder in the "Downloads" folder.
+    #   - Make sure to use the mounted path from the perspective of within the sandbox.
+    [string]$ExistingInstallerFilesPath
 )
 
+# --- Parameter Usage Examples ---
+# Standard run (Download & Install):
+#    .\Install-Microsoft-Store.ps1
+#
+# Install from existing files instead of downloading:
+#    .\Install-Microsoft-Store.ps1 -ExistingInstallerFilesPath "C:\Users\WDAGUtilityAccount\Desktop\HostShared\MSStore Install"
+#
+# Download only (Don't Install):
+#    .\Install-Microsoft-Store.ps1 -noInstall
+#
+# Debug mode (Save SOAP XML logs to disk):
+#    .\Install-Microsoft-Store.ps1 -debugSaveFiles
+
+# =======================================================
+
 # --- Configuration ---
 # Note: These defaults should work for the regular current build of Microsoft Store, but I haven't tested using any of the other values. So fetching insider builds of MS Store (if any) might not work.
 $flightRing = "Retail"             # Apparently accepts 'Retail', 'Internal', and 'External'
@@ -43,21 +66,26 @@ $subfolderName = "MSStore Install"
 # Category ID for the Microsoft Store app package
 $storeCategoryId = "64293252-5926-453c-9494-2d4021f1c78d" 
 
-# Combine them to create the full working directory path
+if ($ExistingInstallerFilesPath) {
-$workingDir = Join-Path -Path $userDownloadsFolder -ChildPath $subfolderName
+    if (Test-Path -Path $ExistingInstallerFilesPath) {
-$LogDirectory = Join-Path -Path $workingDir -ChildPath "Logs"
+        $workingDir = $ExistingInstallerFilesPath
+        Write-Host "Using local source path: $workingDir" -ForegroundColor Yellow
+    } else {
+        Write-Error "The specified local source path does not exist: $ExistingInstallerFilesPath"
+        return
+    }
+} else {
+    # Combine them to create the full working directory path
+    $workingDir = Join-Path -Path $userDownloadsFolder -ChildPath $subfolderName
     
-# Create the directory if it doesn't exist
+    # Create the directory if it doesn't exist
-if (-not (Test-Path -Path $workingDir)) {
+    if (-not (Test-Path -Path $workingDir)) {
         New-Item -Path $workingDir -ItemType Directory -Force | Out-Null
+    }
 }
 
 If ($debugSaveFiles) {
-    # Create a subdirectory for logs if it doesn't exist
+    Write-Host "All files (logs, downloads) will be saved to: '$workingDir'" -ForegroundColor Yellow
-    if (-not (Test-Path -Path $LogDirectory)) {
-        New-Item -Path $LogDirectory -ItemType Directory -Force | Out-Null
-    }
-    Write-Host "All files (logs, downloads) will be saved to: '$LogDirectory'" -ForegroundColor Yellow
 }
 
 # --- XML Templates ---
@@ -185,6 +213,7 @@ $headers = @{ "Content-Type" = "application/soap+xml; charset=utf-8" }
 $baseUri = "https://fe3.delivery.mp.microsoft.com/ClientWebService/client.asmx"
 
 try {
+    if (-not $ExistingInstallerFilesPath) {
         # Step 1: Get Cookie
         Write-Host "Step 1: Getting authentication cookie..."
         $cookieRequestPayload = $cookieXmlTemplate
@@ -384,6 +413,7 @@ try {
             Write-Host "An error occurred during the filtering or downloading phase:" -ForegroundColor Red
             Write-Host $_.Exception.ToString()
         }
+    }
 
     If ($noDownload) {
         Write-Host "Skipping download step because of -noDownload switch." -ForegroundColor Yellow