Error 400: invalid_scope when setting up OAuth2 for Gmail

[kerboubou84]

Hi,

I’m encountering an “Error 400: invalid_scope” when trying to connect Gmail with my n8n Cloud instance using OAuth2. Here are the details:

• My n8n instance is hosted on the cloud: https://*************.app.n8n.cloud.
• The Google app is in Test mode, and I’ve added my email as a test user.
• The scopes I’m using are:
  https://www.googleapis.com/auth/gmail.readonly
  https://www.googleapis.com/auth/gmail.modify
  https://www.googleapis.com/auth/gmail.labels
  https://www.googleapis.com/auth/gmail.send

I am a new Born in this world!
I just start yesterday on n8n the idea is to sorting all my unread mail , almost 10000 , I know I know !!!
I think I correctly configured the scopes and the redirect URI (https://***************.app.n8n.cloud/rest/oauth2-credential/callback),
and I’m receiving an invalid_scope error when attempting to authorize Gmail via n8n.

• The scopes are listed in the OAuth consent screen configuration.
• The Gmail API is enabled in the Google Cloud Console.
• My email is added as a test user.

how I can fix this issue?

Thanks in advance for your help!

[n8n]

It looks like your topic is missing some important information. Could you provide the following if applicable.

• n8n version:
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app):
• Operating system:

[Jon]

Hey @kerboubou84

Welcome to the community

You shouldn’t need to make an app in Google if you are using GMail on cloud just open the node, add a credential and the only option should be a sign in with Google button, if you press that it should just work.

If you don’t see the button and you have other options I would recommend updating your instance to a newer version and seeing if that fixes it.

[kerboubou84]

thanks a lot for your response Jon I will try that ! thanks again !