Resolve protocol handler in dev on Win32 and correct directory.

src/main/index.ts

@@ -326,7 +326,22 @@ app.whenReady().then(async () => {
     optimizer.watchWindowShortcuts(window);
   });
 
-  const isDefaultProtocolClient = app.setAsDefaultProtocolClient(protocol);
+  let isDefaultProtocolClient;
+  // remove so we can register each time as we run the app.
+  app.removeAsDefaultProtocolClient(protocol);
+
+  // If we are running a non-packaged version of the app && on windows
+  if (process.env.NODE_ENV === "development" && process.platform === "win32") {
+    // Set the path of electron.exe and your app.
+    // These two additional parameters are only available on windows.
+    isDefaultProtocolClient = app.setAsDefaultProtocolClient(
+      protocol,
+      process.execPath,
+      [path.resolve(process.argv[1])],
+    );
+  } else {
+    isDefaultProtocolClient = app.setAsDefaultProtocolClient(protocol);
+  }
   if (isDefaultProtocolClient) {
     log.info("Protocol handler registered successfully.");
   } else {
@@ -487,6 +502,6 @@ function openMainWindow(): void {
 
 function openInExplorer(url: string): void {
   const folderPath: string = decodeURIComponent(url.split(`${protocol}://`)[1]);
-  log.info("Opening folder in explorer", path.dirname(folderPath));
+  log.info("Opening folder in explorer", folderPath);
-  shell.openPath(path.dirname(folderPath));
+  shell.openPath(folderPath);
 }