diff --git a/main.js b/main.js
index 5f92223..4cc4fc3 100644
--- a/main.js
+++ b/main.js
@@ -78,6 +78,22 @@ const createWindow = () => {
           mainWindow.reload()
         },
       },
+      {
+        label: 'Login',
+        visible: parameters.selectionText.trim().length === 0,
+        click: () => {
+          mainWindow.loadURL(`https://www.bing.com/fd/auth/signin?action=interactive&provider=windows_live_id&return_url=https%3a%2f%2fwww.bing.com`)
+        },
+      },
+      {
+        label: 'Return To GPT',
+        visible: parameters.selectionText.trim().length === 0,
+        click: () => {
+          mainWindow.loadURL(`https://edgeservices.bing.com/edgediscover/query?&${
+              isDarkMode ? 'dark' : 'light'
+          }schemeovr=1&FORM=SHORUN&udscs=1&udsnav=1&setlang=${locale}&features=udssydinternal&clientscopes=windowheader,coauthor,chat,&udsframed=1`)
+        },
+      },
       {
         label: 'Export',
         visible: parameters.selectionText.trim().length === 0,
@@ -227,6 +243,9 @@ const createWindow = () => {
     isDarkMode ? 'dark' : 'light'
   }schemeovr=1&FORM=SHORUN&udscs=1&udsnav=1&setlang=${locale}&features=udssydinternal&clientscopes=windowheader,coauthor,chat,&udsframed=1`
   mainWindow.loadURL(bingUrl)
+
+  // mainWindow.webContents.openDevTools();
+
   // Open links in default browser
   mainWindow.webContents.setWindowOpenHandler(({ url }) => {
     shell.openExternal(url)
@@ -353,12 +372,20 @@ const createWindow = () => {
       }
     }
   })
-  // Replace compose page
+  // Replace compose page or reload window
   mainWindow.webContents.on('dom-ready', () => {
     const url = mainWindow.webContents.getURL()
     if (url === bingUrl) {
       mainWindow.webContents.send('replace-compose-page', isDarkMode)
     }
+
+    // console.log(url);
+    if (url === "https://www.bing.com/") {
+      setTimeout(() => {
+        mainWindow.loadURL(bingUrl);
+      }, 3000);
+    }
+
   })
 }
 
diff --git a/preload.js b/preload.js
index 53d7c7c..42d1c2f 100644
--- a/preload.js
+++ b/preload.js
@@ -1,4 +1,4 @@
-const { ipcRenderer } = require('electron')
+const { ipcRenderer, app, nativeTheme} = require('electron')
 const html2canvas = require('html2canvas')
 const { jsPDF } = require('jspdf')
 const TurndownService = require('turndown')
@@ -17,6 +17,26 @@ window.addEventListener('DOMContentLoaded', () => {
       'position: fixed; top: 0px; height: 32px; width: 100%; -webkit-user-select: none; -webkit-app-region: drag; z-index: 50'
     body.prepend(titleBar)
   }
+
+  //Login Check
+  const isLoginedIn = document.getElementById('underside-sydney-module') != null;
+  // console.log(isLoginedIn);
+  if (!isLoginedIn) {
+    const content = document.getElementById('b_content')
+
+    const error_login = document.createElement("p");
+
+    error_login.style.cssText="display: flex; flex-direction: column; justify-content: center; align-items: center; position: absolute; width: 100vw; height: 100vh; top: 0; left: 0;"
+
+    const image = require('electron').nativeImage.createFromPath('icon.png')
+
+    error_login.innerHTML = `<a href='https://www.bing.com/fd/auth/signin?action=interactive&provider=windows_live_id&return_url=https%3a%2f%2fwww.bing.com'><img alt="login" width="200px" height="200px" src='${image.toDataURL()}'></a>` +
+        "<h1 style='margin-bottom: 10px; font-size: 40px; text-align: center;'>Login Needed！</h1>" +
+        "<a style='display: block; margin-top: 10px; font-size: 25px; text-align: center;' href='https://www.bing.com/fd/auth/signin?action=interactive&provider=windows_live_id&return_url=https%3a%2f%2fwww.bing.com'>Login</a>"
+
+    content.appendChild(error_login);
+  }
+
   // Content
   const content = document.getElementById('b_content')
   if (content) {