How to Fix n8n OAuth2 Invalid Grant 🔁 Renew Expired or Revoked Refresh Token for Seamless API Access

Описание: Getting the “OAuth2 invalid grant” error in n8n? This usually means your refresh token has expired or been revoked. In this tutorial, I’ll show you how to fix it step-by-step by regenerating new tokens, reauthorizing your credentials, and preventing future token expiration issues for smooth and secure API connections.

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✅ What You’ll Learn / Fix:
⚙️ Why the OAuth2 invalid grant error happens
🔁 How to renew or refresh expired tokens
📲 How to reauthorize your credentials in n8n
💡 Tips to prevent token expiration or revocation

✅ Timestamps:
⏱️ 0:00 Intro
🧩 0:25 What causes the OAuth2 invalid grant error
🔁 1:00 How to generate new refresh tokens
📲 1:40 How to reauthorize in n8n and test connection
💡 2:20 Bonus tip – setting up long-lived tokens
✅ 3:00 Wrap-up

✅ Why Watch This Video:
🔧 Fix OAuth2 invalid grant errors quickly in n8n
🚀 Keep your API integrations running without interruptions
💡 Learn to manage and renew tokens securely

✅ Who This Helps:
💻 n8n users integrating OAuth2-based APIs
🔐 Developers maintaining long-term workflow connections
📱 Anyone facing expired or revoked refresh token issues

👍 Found This Helpful?
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