Close other pwsh's in the VSCode instance

.vscode/tasks.json

@@ -4,7 +4,7 @@
     "windows": {
         "options": {
             "shell": {
-                "executable": "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe",
+                "executable": "pwsh.exe",
                 "args": [ "-NoProfile", "-ExecutionPolicy", "Bypass", "-Command" ]
             }
         }

src/features/UpdatePowerShell.ts

@@ -116,7 +116,8 @@ export async function InvokePowerShellUpdateCheck(
 
     const result = await window.showInformationMessage(
         `${commonText} Would you like to update the version? ${
-            isMacOS ? "(Homebrew is required on macOS)" : ""
+            isMacOS ? "(Homebrew is required on macOS)"
+                : "(This will close ALL pwsh terminals running in this Visual Studio Code session)"
         }`, ...options);
 
     // If the user cancels the notification.
@@ -151,6 +152,15 @@ export async function InvokePowerShellUpdateCheck(
                 // Stop the Integrated Console session because Windows likes to hold on to files.
                 sessionManager.stop();
 
+                // Close all terminals with the name "pwsh" in the current VS Code session.
+                // This will encourage folks to not close the instance of VS Code that spawned
+                // the MSI process.
+                for (const terminal of window.terminals) {
+                    if (terminal.name === "pwsh") {
+                        terminal.dispose();
+                    }
+                }
+
                 // Invoke the MSI via cmd.
                 const msi = spawn("msiexec", ["/i", msiDownloadPath]);