{"slug":"browserbase-tunnel-connection-failed","name":"Browserbase: tunnel connection failed","category":"diagnostic","provider_slug":null,"publisher":"Browserbase","publisher_type":"official","website":"https://docs.browserbase.com/platform/identity/proxies","summary":"Check location selection and proxy connectivity when a Browserbase session reports ERR_TUNNEL_CONNECTION_FAILED.","tools":["playwright","puppeteer"],"capabilities":["error-handling"],"outputs":["Diagnostic guidance"],"connection":"cdp","billing_basis":"Browserbase plan and proxy usage charges apply; this reference does not estimate retry costs.","facts":[{"label":"Possible causes","value":"The documentation lists an unsupported site, unsupported city or temporary proxy issue.","source_ids":["docs"]},{"label":"Location check","value":"Retry without city targeting or choose another city.","source_ids":["docs"]},{"label":"Custom proxy check","value":"Custom proxy connectivity is validated when the session is created; unreachable endpoints or incorrect credentials can fail creation.","source_ids":["docs"]}],"setup":["Check the requested location and proxy configuration.","For a temporary issue, retry the session; consult the source for site restrictions."],"limitations":["The error alone cannot establish which cause applies."],"sources":[{"id":"docs","label":"Browserbase proxy troubleshooting and custom proxies","url":"https://docs.browserbase.com/platform/identity/proxies","checked_at":"2026-09-27"}],"checked_at":"2026-09-27","review_due":"2026-10-27","evidence":"documented","url":"https://workingproxysites.info/tools/browserbase-tunnel-connection-failed","provider_url":null,"review_overdue":false}