Zoho WorkDrive Generic OAuth2 – Refresh Token not working

Questions
7

Hi everyone,

I wanted to share that I found a workaround since I couldn’t get the Generic OAuth2 credential to store the refresh token correctly in v2.12.3.

Instead of using the built-in Credential system, I switched to a manual flow using the HTTP Request Node:

  1. App Creation: Created the app in api-console.zoho.eu as a “Server-based Application.”

  2. Authorization Code: Generated the initial code manually via the browser (using the required scopes).

  3. Refresh Token: Used Insomnia (or Postman) to exchange that code for a permanent refresh_token.

  4. n8n Implementation:

    • I store the refresh_token in an n8n variable node.

    • I use an HTTP Request Node at the start of my workflow to call https://accounts.zoho.eu/oauth/v2/token with grant_type=refresh_token.

    • This gives me a fresh access_token valid for 1 hour, which I then pass to my WorkDrive API calls.

It requires a few more nodes in the workflow, but it’s 100% stable and avoids the 60-minute expiry issue I was having with the generic credentials.

Thanks @tamy.santos and @pvdyck for the support!