Google OAuth redirect_uri_mismatch on n8n Cloud (Free Trial)

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See here @Yash_Chavhan

Error 400: redirect_uri_mismatch - Setting up Gmail credentials

Hi @Leam_Hamilton The “Error 400: redirect_uri_mismatch” during Gmail OAuth setup in n8n is almost always due to Google not recognizing the redirect URI used during authentication, even if it looks correct. Let’s walk through how to fix it step by step: Confirm the Correct Redirect URI In your Google Cloud Console, make sure this exact redirect URI is listed under: OAuth 2.0 Client IDs → Authorized redirect URIs If you’re using Docker with a domain like https://n8n.example.com, then your …