Software⏱️ 2 min read📅 2026-05-31

How to Fix: Error: invalid_client no application name

Quick Answer: Make sure to include the application name in your client ID. Check the Google API Console for the correct application name and update it accordingly.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. ✅ Best Solutions to Fix It
  3. 🎯 Final Words

To resolve the 'invalid_client no application name' error when using Google Apps API for OAuth2 authorization, it's essential to ensure that your project and application are correctly set up within the Google API Console.

⚠️ Common Causes

  • Insufficient or incorrect client ID or secret provided in the authorization URL.

✅ Best Solutions to Fix It

Method 1: Verify Client Credentials

  1. Step 1: Go to the Google API Console and select your project.
  2. Step 2: Navigate to 'APIs & Services' > 'Credentials' and find your application's client ID.
  3. Step 3: Ensure that the 'Authorized Redirect URIs' field contains the correct redirect URI from your authorization URL.

Method 2: Update Authorization URL

  1. Step 1: Review your authorization URL and ensure that the 'client_id' parameter contains the correct application client ID.
  2. Step 2: Update the 'client_id' parameter with the correct value from the Google API Console.

🎯 Final Words

By following these steps, you should be able to resolve the 'invalid_client no application name' error and successfully authorize your Google Apps API using OAuth2.

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