I am using n8n Cloud.
Google OAuth2 consistently fails with redirect_uri_mismatch despite correct configuration.
I have rebuilt OAuth clients multiple times and verified exact redirect URIs.
The redirect URI used is tied to my workspace sabashvili.app.n8n.cloud.
Please check whether my workspace is correctly bound to the n8n OAuth broker (oauth.n8n.cloud) or reset OAuth routing for my workspace.
HI @Saba-Sabashvili ,
Unfortunately, this is happening to a good amount of people (myself included). Looks like it’s something on the n8n side of things.
Khem
Should work by upgrading to 2.1.4 (if you’re on 2.1.2). See this (at the bottom): N8n Cloud Google Drive OAuth2 failing: redirect_uri_mismatch (Gmail + Workspace) - #18 by mielye_mitchell
Updating the n8n version to 2.1.4 or later should solve that issue 
Upgraded to 2.1.14 but issue persists on self hosted (hostingr + traefik). But fixed for cloud version 
Anuone else with the same issue ?