How to fix 403 Permission Error N8N with Google Sign Up OAuth2 in 2026?

Questions
1

Hey Team!

Still having issues with Google Sheets. I’ve been trying to integrate the Google node with N8N for days, but the output keeps generating a 403 Permission error. I’ve tried OAUTH2 and Service Account methods. In both cases, I configured everything correctly. I also shared the email within the Sheet file. I assigned both Sheet and Drive roles and activated the necessary APIs from my Google console.

{ “error”: { “code”: 403, “message”: “The caller does not have permission”, “status”: “PERMISSION_DENIED” }

Anyone know how to fix it ?

3

Hi @Giacomo_James,

Are you open to a google meet call. It’s really difficult to tell where the issue could be without seeing your setup and the steps you have followed

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