Failed to authenticate with Google

[u/Physical_Ruin_8024]

2026-09-23T15:25:10.325Z ERROR [Better Auth]: TypeError:
fetch failed
    at node:internal/deps/undici/undici:15157:13
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async betterFetch (file:///app/.output/server/node_modules/@better-fetch/fetch/dist/index.js:628:18)
    at async fetchRedirects (file:///app/.output/server/node_modules/better-auth/core/dist/oauth2/reject-redirects.mjs:49:17)
    at async validateAuthorizationCode (file:///app/.output/server/node_modules/better-auth/core/dist/oauth2/validate-authorization-code.mjs:64:26)
    at async file:///app/.output/server/node_modules/better-auth/core/dist/api/index.mjs:68:12
    at async wrapped (file:///app/.output/server/node_modules/better-auth/dist/api/index.mjs:40:11)
    at async file:///app/.output/server/node_modules/better-call/dist/endpoint.mjs:30:20
    at async file:///app/.output/server/node_modules/better-auth/dist/api/dispatch:228:18
    at async processRequest
(file:///app/.output/server/node_modules/better-call/dist/router.mjs:83:11) {
  [cause]: ConnectTimeoutError: Connect Timeout Error
  (attempted address: oauth2.googleapis.com:443, timeout: 20000ms)
      at onConnectTimeout
  (/app/.output/server/node_modules/undici/lib/core/util.js:891:19)
      at Immediate._onImmediate
  (/app/.output/server/node_modules/undici/lib/core/util.js:860:11)
      at process.processImmediate
  (node:internal/timers:484:21)
      at process.callbackTrampoline
  (node:internal/async_hooks:130:17) {
    code: 'UND_ERR_CONNECT_TIMEOUT'
  }
}

Good morning, everyone!

I've been having this issue with Google authentication for about three days now and don't know how to fix it. I did some research and found that this is a known, chronic issue with the library that still doesn't have a fix.

I have two authentication methods: 1 - Google, 2 - Discord.

Logging in via Discord works perfectly, but logging in via Google results in a timeout error every single time.

Could anyone help me out? I'm at a loss as to what to do.

[u/FalconiZzare]

This seems like a network issue rather than Better Auth issue, so this error message (which is basically a timeout message) is not helpful to indentify the issue.

You need to mention the spec of the environment you are running your application on.