diff --git a/README.md b/README.md
index 9f97396..647574f 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,8 @@ The application requires the following environment variables:
 - `DATABASE_URL`: PostgreSQL connection string
 - `NEXTAUTH_SECRET`: Secret for NextAuth.js
 - `NEXT_PUBLIC_BASE_URL`: Public URL of the application
+- `MICROSOFT_CLIENT_ID`: Azure AD Application (client) ID for Microsoft Login
+- `MICROSOFT_CLIENT_SECRET`: Azure AD Application secret for Microsoft Login
 
 ### Database Configuration
 
diff --git a/package-lock.json b/package-lock.json
index 2701f39..5426118 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,6 +10,7 @@
       "license": "MIT",
       "dependencies": {
         "@auth/prisma-adapter": "^2.11.1",
+        "@next-auth/prisma-adapter": "^1.0.7",
         "@prisma/client": "^5.22.0",
         "@types/bcryptjs": "^2.4.6",
         "@types/nodemailer": "^7.0.11",
@@ -1955,6 +1956,16 @@
         "@tybys/wasm-util": "^0.10.0"
       }
     },
+    "node_modules/@next-auth/prisma-adapter": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/@next-auth/prisma-adapter/-/prisma-adapter-1.0.7.tgz",
+      "integrity": "sha512-Cdko4KfcmKjsyHFrWwZ//lfLUbcLqlyFqjd/nYE2m3aZ7tjMNUjpks47iw7NTCnXf+5UWz5Ypyt1dSs1EP5QJw==",
+      "license": "ISC",
+      "peerDependencies": {
+        "@prisma/client": ">=2.26.0 || >=3",
+        "next-auth": "^4"
+      }
+    },
     "node_modules/@next/env": {
       "version": "14.2.35",
       "resolved": "https://registry.npmjs.org/@next/env/-/env-14.2.35.tgz",
diff --git a/package.json b/package.json
index c97e729..157fc51 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
   "license": "MIT",
   "dependencies": {
     "@auth/prisma-adapter": "^2.11.1",
+    "@next-auth/prisma-adapter": "^1.0.7",
     "@prisma/client": "^5.22.0",
     "@types/bcryptjs": "^2.4.6",
     "@types/nodemailer": "^7.0.11",
diff --git a/src/app/auth/login/page.tsx b/src/app/auth/login/page.tsx
index 239ac34..6a1195d 100644
--- a/src/app/auth/login/page.tsx
+++ b/src/app/auth/login/page.tsx
@@ -50,6 +50,10 @@ function LoginContent() {
           </div>
         )}
 
+        <p className="weekly-auth-recommended">
+          Recommended: Log in with email
+        </p>
+
         {/* Login Form */}
         <form onSubmit={handleCredentialsSignIn} className="weekly-auth-form">
           <div className="weekly-auth-field">
@@ -85,7 +89,7 @@ function LoginContent() {
 
         {/* Divider */}
         <div className="weekly-auth-divider">
-          <span>or</span>
+          <span>or trust US Big Tech</span>
         </div>
 
         {/* Google Sign In */}
@@ -118,6 +122,20 @@ function LoginContent() {
           Continue with Apple
         </button>
 
+        {/* Microsoft Sign In */}
+        <button
+          type="button"
+          onClick={() => { setIsLoading(true); signIn('azure-ad', { callbackUrl }); }}
+          disabled={isLoading}
+          className="weekly-auth-button"
+          style={{ marginTop: '0.75rem', backgroundColor: '#0078D4', color: '#fff', border: '1px solid #0078D4' }}
+        >
+          <svg className="microsoft-icon" viewBox="0 0 21 21" width="18" height="18" fill="currentColor">
+            <path d="M10 0H0v10h10V0zM21 0H11v10h10V0zM10 11H0v10h10V11zM21 11H11v10h10V11z" />
+          </svg>
+          Continue with Microsoft
+        </button>
+
         {/* Links */}
         <div className="weekly-auth-links">
           <Link href="/auth/forgot-password" className="weekly-auth-link">
diff --git a/src/app/auth/signup/page.tsx b/src/app/auth/signup/page.tsx
index f713051..0265c7f 100644
--- a/src/app/auth/signup/page.tsx
+++ b/src/app/auth/signup/page.tsx
@@ -91,6 +91,10 @@ export default function SignupPage() {
           </div>
         )}
 
+        <p className="weekly-auth-recommended">
+          Recommended: Sign up with email
+        </p>
+
         {/* Signup Form */}
         <form onSubmit={handleSignup} className="weekly-auth-form">
           <div className="weekly-auth-field">
@@ -150,7 +154,7 @@ export default function SignupPage() {
 
         {/* Divider */}
         <div className="weekly-auth-divider">
-          <span>or</span>
+          <span>or trust US Big Tech</span>
         </div>
 
         {/* Google Sign Up */}
@@ -183,6 +187,20 @@ export default function SignupPage() {
           Sign up with Apple
         </button>
 
+        {/* Microsoft Sign Up */}
+        <button
+          type="button"
+          onClick={() => { setIsLoading(true); signIn('azure-ad', { callbackUrl: '/tasks' }); }}
+          disabled={isLoading}
+          className="weekly-auth-button"
+          style={{ marginTop: '0.75rem', backgroundColor: '#0078D4', color: '#fff', border: '1px solid #0078D4' }}
+        >
+          <svg className="microsoft-icon" viewBox="0 0 21 21" width="18" height="18" fill="currentColor">
+            <path d="M10 0H0v10h10V0zM21 0H11v10h10V0zM10 11H0v10h10V11zM21 11H11v10h10V11z" />
+          </svg>
+          Sign up with Microsoft
+        </button>
+
         {/* Links */}
         <div className="weekly-auth-links">
           <span className="weekly-auth-text">Already have an account?</span>
diff --git a/src/app/globals.css b/src/app/globals.css
index 6b99fb6..571f725 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -186,6 +186,14 @@ h3 {
   color: #64748b;
 }
 
+.weekly-auth-recommended {
+  font-size: 0.85rem;
+  color: #475569;
+  text-align: center;
+  margin-bottom: 1rem;
+  font-weight: 500;
+}
+
 .time-indicator {
   font-size: 0.875rem;
   color: #3b82f6;
@@ -330,7 +338,6 @@ h3 {
   box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
 }
 
-/* Auth Form */
 .auth-form {
   background: white;
   border-radius: 8px;
diff --git a/src/lib/auth.ts b/src/lib/auth.ts
index 8da35ca..032f2a6 100644
--- a/src/lib/auth.ts
+++ b/src/lib/auth.ts
@@ -1,13 +1,14 @@
 import { NextAuthOptions } from "next-auth";
 import GoogleProvider from "next-auth/providers/google";
+import AzureADProvider from "next-auth/providers/azure-ad";
 import AppleProvider from "next-auth/providers/apple";
-import { PrismaAdapter } from "@auth/prisma-adapter";
+import { PrismaAdapter } from "@next-auth/prisma-adapter";
 import CredentialsProvider from "next-auth/providers/credentials";
 import { compare } from "bcryptjs";
 import { prisma } from "@/lib/prisma";
 
 export const authOptions: NextAuthOptions = {
-  adapter: PrismaAdapter(prisma) as any,
+  adapter: PrismaAdapter(prisma),
   providers: [
     GoogleProvider({
       clientId: process.env.GOOGLE_CLIENT_ID || "",
@@ -17,7 +18,8 @@ export const authOptions: NextAuthOptions = {
         params: {
           prompt: "consent",
           access_type: "offline",
-          response_type: "code"
+          response_type: "code",
+          scope: "openid profile email https://www.googleapis.com/auth/calendar https://www.googleapis.com/auth/calendar.events https://www.googleapis.com/auth/tasks"
         }
       }
     }),
@@ -26,6 +28,18 @@ export const authOptions: NextAuthOptions = {
       clientSecret: process.env.APPLE_SECRET || "",
       allowDangerousEmailAccountLinking: true,
     }),
+    AzureADProvider({
+      clientId: process.env.MICROSOFT_CLIENT_ID || "",
+      clientSecret: process.env.MICROSOFT_CLIENT_SECRET || "",
+      tenantId: "common",
+      allowDangerousEmailAccountLinking: true,
+      authorization: {
+        params: {
+          prompt: "consent",
+          scope: "openid profile email offline_access user.read Calendars.ReadWrite Tasks.ReadWrite"
+        }
+      },
+    }),
     CredentialsProvider({
       name: "credentials",
       credentials: {
@@ -70,6 +84,7 @@ export const authOptions: NextAuthOptions = {
       }
     })
   ],
+  debug: true,
   session: {
     strategy: "jwt"
   },