Add VBSCRIPT requirement documentation for MSI builds (#3382)

Author: RobertLupas

src/content/docs/distribute/windows-installer.mdx

@@ -29,6 +29,10 @@ To build and bundle your app into a Windows installer you can use the Tauri CLI
   cargo="cargo tauri build"
 />
 
+:::note[VBSCRIPT requirement for MSI packages]
+Building MSI packages (`"targets": "msi"` or `"targets": "all"` in `tauri.conf.json`) requires the VBSCRIPT optional feature to be enabled on Windows. This feature is enabled by default on most Windows installations, but if you encounter errors like `failed to run light.exe`, you may need to enable it manually through **Settings** → **Apps** → **Optional features** → **More Windows features**. See the [Prerequisites guide](/start/prerequisites/#vbscript-for-msi-installers) for detailed instructions.
+:::
+
 ### Experimental: Build Windows apps on Linux and macOS
 
 Cross compiling Windows apps on Linux and macOS hosts is possible when using [NSIS].

src/content/docs/start/prerequisites.mdx

@@ -209,6 +209,24 @@ Tauri uses Microsoft Edge WebView2 to render content on Windows.
 
 Install WebView2 by visiting the [WebView2 Runtime download section](https://developer.microsoft.com/en-us/microsoft-edge/webview2/#download-section). Download the "Evergreen Bootstrapper" and install it.
 
+Next: [Check VBSCRIPT](#vbscript-for-msi-installers)
+
+#### VBSCRIPT (for MSI installers)
+
+:::note[MSI package building only]
+This is only required if you plan to build MSI installer packages (`"targets": "msi"` or `"targets": "all"` in `tauri.conf.json`).
+:::
+
+Building MSI packages on Windows requires the VBSCRIPT optional feature to be enabled. This feature is enabled by default on most Windows installations, but may have been disabled on some systems.
+
+If you encounter errors like `failed to run light.exe` when building MSI packages, you may need to enable the VBSCRIPT feature:
+
+1. Open **Settings** → **Apps** → **Optional features** → **More Windows features**
+2. Locate **VBSCRIPT** in the list and ensure it's checked
+3. Click **Next** and restart your computer if prompted
+
+**Note:** VBSCRIPT is currently enabled by default on most Windows installations, but is [being deprecated](https://techcommunity.microsoft.com/blog/windows-itpro-blog/vbscript-deprecation-timelines-and-next-steps/4148301) and may be disabled in future Windows versions.
+
 Next: [Install Rust](#rust)
 
 ## Rust