diff --git a/build/error.png b/build/error.png
new file mode 100644
index 0000000..6db73a9
Binary files /dev/null and b/build/error.png differ
diff --git a/config.js b/config.js
index 3c7d6a7..55983b6 100644
--- a/config.js
+++ b/config.js
@@ -2,6 +2,6 @@ module.exports = {
     version: "1.3.0",
     applicationPort: "8787",
     debugMode: true,
-    localMode: true,
+    localMode: false,
     DiscordRPCID: "1410934537051181146",
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index f6a147a..b696ab3 100644
--- a/package.json
+++ b/package.json
@@ -47,6 +47,10 @@
         "from": "build/confirm-icon.png",
         "to": "confirm-icon.png"
       },
+      {
+        "from": "build/error.png",
+        "to": "error.png"
+      },
       {
         "from": "ressources/yt-dlp.exe",
         "to": "yt-dlp.exe"
diff --git a/server/helpers/buildArgs.js b/server/helpers/buildArgs.js
index 92de6e3..8185d10 100644
--- a/server/helpers/buildArgs.js
+++ b/server/helpers/buildArgs.js
@@ -1,7 +1,10 @@
 const path = require("path");
 
+const getUserBrowser = require("./getBrowser")
+
 function buildYtDlpArgs({ url, audioOnly, quality, outputFolder }) {
   const args = [
+    "--cookies-from-browser", `${getUserBrowser()}`,
     "--no-continue",
     "--no-overwrites",
     "--embed-thumbnail",
@@ -32,3 +35,4 @@ function buildYtDlpArgs({ url, audioOnly, quality, outputFolder }) {
 }
 
 module.exports = { buildYtDlpArgs };
+
diff --git a/server/helpers/getBrowser.js b/server/helpers/getBrowser.js
new file mode 100644
index 0000000..6921cde
--- /dev/null
+++ b/server/helpers/getBrowser.js
@@ -0,0 +1,27 @@
+const fs = require("fs");
+const os = require("os");
+const path = require("path");
+const notify = require("./notify")
+
+function getUserBrowser() {
+  const userProfile = os.homedir();
+
+  // Liste des navigateurs supportés par yt-dlp
+  const browsers = [
+    { name: "firefox", path: path.join(userProfile, "AppData", "Roaming", "Mozilla", "Firefox", "Profiles")},
+    { name: "chrome", path: path.join(userProfile, "AppData", "Local", "Google", "Chrome", "User Data") },
+    { name: "edge", path: path.join(userProfile, "AppData", "Local", "Microsoft", "Edge", "User Data") },
+  ];
+
+  for (const browser of browsers) {
+    if (fs.existsSync(browser.path)) {
+      return browser.name;
+    } else{
+        
+    }
+  }
+  notify.notifyCookiesBrowserError()
+  return ;
+}
+
+module.exports = getUserBrowser
\ No newline at end of file
diff --git a/server/helpers/notify.js b/server/helpers/notify.js
index 7e7cb9c..dfc6d64 100644
--- a/server/helpers/notify.js
+++ b/server/helpers/notify.js
@@ -13,4 +13,19 @@ function notifyDownloadFinished(folder) {
   notif.show();
 }
 
-module.exports = { notifyDownloadFinished };
+function notifyCookiesBrowserError(){
+  const iconPath = path.join(process.resourcesPath, "error.png");
+  const notif = new Notification({
+    title: "Cookies Error",
+    body: "Impossible de récupérer les cookies. Connectez-vous sur votre navigateur et cliquez ici pour voir le tuto.",
+    icon: iconPath,
+  });
+
+  notif.on("click", () => shell.openExternal("https://youtube.com/shorts/cN9f4s1Mf88?si=519QCVd_-fzJqRf1"));
+  notif.show();
+}
+
+module.exports = {
+  notifyDownloadFinished, 
+  notifyCookiesBrowserError
+};
\ No newline at end of file
diff --git a/server/routes/info.js b/server/routes/info.js
index d38c236..504ff77 100644
--- a/server/routes/info.js
+++ b/server/routes/info.js
@@ -3,6 +3,8 @@ const router = express.Router();
 const { execFile } = require("child_process");
 const { logger } = require("../logger");
 const { userYtDlp } = require("../helpers/path");
+const getUserBrowser = require("../helpers/getBrowser")
+
 
 // const ytDlpPath = path.join(__dirname, '../../ressources/yt-dlp.exe');
 // const userYtDlp = path.join(process.env.APPDATA || process.env.USERPROFILE, 'FreedomLoader', 'yt-dlp.exe');
@@ -22,9 +24,20 @@ router.post("/", (req, res) => {
 
   logger.info(`Requête /info reçue pour ${url}`);
 
-  const args = ["--dump-single-json", "--ignore-errors", "--yes-playlist", url];
+  const args = ["--dump-single-json", "--ignore-errors", "--yes-playlist", url, "--cookies-from-browser" , `${getUserBrowser()}`];
 
   execFile(userYtDlp, args, { timeout: 30_000, maxBuffer: 10 * 1024 * 1024 }, (error, stdout, stderr) => {
+
+    if (stderr) {
+      const lower = stderr.toLowerCase();
+      if (lower.includes("sign in to confirm") || lower.includes("failed to decrypt") || lower.includes("could not copy")) {
+        const browser = getUserBrowser();
+        return res.status(400).send(
+          `❌ Impossible d'extraire les cookies depuis ${browser}. Connectez-vous dans ce navigateur et réessayez.`
+        );
+      }
+    }
+
     if (error) {
       logger.error(`Erreur yt-dlp: ${error.message}`);
       if (stderr) logger.debug(`stderr: ${stderr}`);