Describe the problem/error/question
My Gmail Trigger node stopped working. The built-in Google OAuth authorization (using “Sign in with Google” on n8n Cloud) has become invalid. The workflow was working previously but now fails on every poll.
I didn’t change password or revoked app access. After re-authenticating via “Sign in with Google” the trigger works, but I don’t understand why it stopped working or if it will stop again.
What is the error message (if any)?
The provided authorization grant (e.g., authorization code, resource owner credentials) or refresh token is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client.
Full error:
{
"errorMessage": "The provided authorization grant (e.g., authorization code, resource owner credentials) or refresh token is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client.",
"errorDetails": {
"rawErrorMessage": [
"The provided authorization grant (e.g., authorization code, resource owner credentials) or refresh token is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client."
],
"httpCode": "EAUTH"
}
}
Please share your workflow
Not relevant - this is a credential/authentication issue, not a workflow logic issue. The Gmail Trigger node fails before any workflow execution.
Share the output returned by the last node
N/A - the trigger itself fails to authenticate.
Information on your n8n setup
-
n8n version: 1.99.1
-
Database: N/A (Cloud)
-
n8n EXECUTIONS_PROCESS setting: N/A (Cloud)
-
Running n8n via: n8n Cloud
-
Operating system: N/A (Cloud)
