What this error means
wrangler login hangs until 120s OAuth timeout — OAuth provider redirect with error code not shown to user is a Cloudflare Workers failure pattern reported for developers trying to debug cloudflare wrangler cli login command hanging when oauth callback returns an error (not access_denied), waiting full 120s timeout instead of surfacing the actual oauth error to the user. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.
Why this happens
Related GitHub PR #14022 in cloudflare/workers-sdk (opened May 23, 2026). When OAuth provider rejects the callback, Wrangler writes no HTTP response; server.close() blocks until connections end. Users see generic timeout, not the actual OAuth error_description (RFC 6749 §4.1.2.1). Affects every developer authenticating with Cloudflare.
Common causes
- Related GitHub PR #14022 in cloudflare/workers-sdk (opened May 23, 2026). When OAuth provider rejects the callback, Wrangler writes no HTTP response; server.close() blocks until connections end. Users see generic timeout, not the actual OAuth error_description (RFC 6749 §4.1.2.1). Affects every developer authenticating with Cloudflare.
Quick fixes
- Confirm the exact error signature matches
wrangler login hangs until 120s OAuth timeout — OAuth provider redirect with error code not shown to user. - Check the Cloudflare Workers account, local tool state, and provider configuration involved in the failing workflow.
- Verify the account session, API key, provider settings, and environment where the failing tool is running.
Platform/tool-specific checks
- Verify the command, editor, extension, or API client that produced the error.
- Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
- Avoid deleting credentials, local model data, or project settings until the failing scope is clear.
Step-by-step troubleshooting
- Capture the exact error message and the command, editor action, or request that triggered it.
- Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
- Review the source evidence below and compare it with your environment.
- Apply one change at a time and rerun the smallest failing action.
- Keep the working fix documented for the team or deployment environment.
How to prevent it
- Keep provider/tool configuration documented.
- Record non-secret diagnostics such as tool version, provider name, model name, and command path.
- Add a lightweight check before CI or production workflows depend on the tool.