Cf dns lookup failed

Zero Trust WARP
1

What is the name of the domain?

felipecarballo.com.br

What is the issue you’re encountering

Hello, everyone. I need some help, and I would appreciate it if someone could point me in the right direction. I am working on a proof of concept with Cloudflare Zero Trust, specifically ZTNA. The problem is that I am unable to connect to WARP. Both the iPhone app and the Windows app are giving a DNS error: when I try to connect, it doesn’t connect and shows the message “CF_DNS_LOOKUP_FAILED”. If I try to connect to WARP without a Cloudflare One account, it works.

2

Hi there,

Please refer to our Docs here : CF_DNS_LOOKUP_FAILURE

3

Hello! Thank you for your reply but I’ve already read this document before posting. The problem only occurs if I try to connect to WARP with my Zero Trust account. If I try to connect to WARP with the “public” or “no account”, it connects.

4

Just begin curious, are you using the latest version of the app? :thinking:

From which country?

A quite number of topics since past have had the same issue :thinking:

5

Brazil

6 
type or pa2024-08-29T20:33:17.173Z  INFO main_loop: warp::warp::captive_portal: Successfully resolved DNS queries
2024-08-29T20:33:17.227Z  INFO main_loop: warp::warp::captive_portal: Successfully retrieved HTTPs page
2024-08-29T20:33:17.227Z  WARN main_loop: warp::warp::connection_config: Initial check failed but check_captive_portal reports no problems. Retrying.
2024-08-29T20:33:19.242Z DEBUG main_loop: dns_proxy::resolver: Ending DoH connection stats=establish_time:2024-08-29 20:33:17.172961689 +00:00:00, ip:2606:4700:4700::1111, attempted_queries:1, successful_queries:0, certificate_errors:0, timeout_errors:0, no_connection_errors:1, proto_errors:0, io_errors:0, msg_errors:0
2024-08-29T20:33:19.256Z DEBUG main_loop: dns_proxy::resolver: Ending DoH connection stats=establish_time:2024-08-29 20:33:19.242633285 +00:00:00, ip:2606:4700:4700::1111, attempted_queries:1, successful_queries:0, certificate_errors:0, timeout_errors:0, no_connection_errors:1, proto_errors:0, io_errors:0, msg_errors:0
2024-08-29T20:33:19.256Z  WARN main_loop: warp::warp::proxying_dns: Failed to lookup connectivity.cloudflareclient.com error=ResolveError { kind: NoRecordsFound { query: Query { name: Name("connectivity.cloudflareclient.com."), query_type: AAAA, query_class: IN }, soa: None, negative_ttl: None, response_code: Refused, trusted: true } }

I performed a fresh installation of Ubuntu on a virtual machine so that I could rule out any interference from third-party applications. Even on a new installation, WARP does not work. I tried connecting using more than one internet provider, and it still doesn’t work. If I don’t set up a Zero Trust account, WARP connects without any problems.