# Microsoft Conditional Access: QR Code Authentication in Microsoft Entra

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Microsoft has introduced a new QR code authentication method for Microsoft Entra (formerly Azure AD), providing a seamless and secure sign-in experience for users, especially frontline workers and shared device scenarios.

🔹 Key Features:

✅ Secure sign-in using QR code + PIN

✅ Reduces password reset requests

✅ Ideal for shared devices and quick access

✅ Streamlines authentication for Microsoft 365

🔗 Reference: Enable QR Code Authentication in Microsoft 365

You Should Know:

1. Enabling QR Code Authentication in Microsoft Entra

To configure QR code authentication, follow these steps:

Step 1: Enable the Authentication Method in Azure AD 

Connect-AzureAD 
Set-AzureADPolicy -Id "YourPolicyID" -DisplayName "Enable QR Code Auth" -Definition @('{"AuthenticationMethodsPolicy":{"Enabled":true}}')

#### **Step 2: Configure Conditional Access Policies**

Navigate to:

Azure Portal → Microsoft Entra ID → Security → Conditional Access → New Policy
– Users: Select target users (e.g., Frontline Workers)
– Cloud Apps: Microsoft 365
– Grant: Require QR Code Authentication

#### **Step 3: Test QR Code Authentication**

  1. Users scan the QR code from the Microsoft Authenticator app.

2. Enter a **PIN** for additional security.

3. Access granted without SMS or voice calls.

2. Linux & Windows Commands for Secure Authentication

#### **Linux (Bash) – Simulating Secure Auth**


<h1>Generate a QR code (Linux)</h1>

qrencode -o auth_qr.png "https://entra.microsoft.com/auth?token=SECURE123"

<h1>Verify authentication logs (Linux)</h1>

grep "QR_AUTH" /var/log/auth.log

#### **Windows (PowerShell) – Audit Authentication Events**


<h1>Check Microsoft Entra sign-in logs</h1>

Get-AzureADAuditSignInLogs -Filter "status/errorCode eq 0" | Where-Object { $_.AuthenticationDetails -like "*QRCode*" }

<h1>Export logs for compliance</h1>

Export-AzureADAuditSignInLogs -Path "C:\Logs\QR_Auth_Logs.csv"

### **3. Troubleshooting QR Code Auth Issues**

  • Error: “QR Code Not Recognized” → Ensure camera permissions are granted.
  • Error: “Invalid PIN” → Check Azure AD PIN policy settings.
  • Logs: Use `Get-AzureADAuditSignInLogs` to diagnose failures.

## **What Undercode Say:**

Microsoft’s QR code authentication enhances security while simplifying access, especially for frontline workers. By reducing dependency on passwords, it mitigates phishing risks. However, ensure conditional access policies enforce device compliance.

🔹 Pro Tip: Combine with Windows Hello or FIDO2 keys for stronger MFA.

## **Expected Output:**

  • Successful QR code authentication logs in Azure AD.
  • Reduced password reset requests.
  • Faster sign-ins on shared devices.

🔗 Learn More: Microsoft Entra QR Code Auth Documentation

References:

Reported By: Https: – Hackers Feeds
Extra Hub: Undercode MoN
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