# Error node: Proxy server error **URL:** \ **Category:** Pritunl Zero\ **Created:** [November 13, 2023, 12:42pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542 "2023-11-13T12:42:36Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![kkirk](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/k/4bbf92/32.png) [@kkirk](https://forum.pritunl.com/u/kkirk)\ **Post date:** [November 13, 2023, 12:42pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/1 "2023-11-13T12:42:37Z")
Hello, I’m very vanilla and inherited this system. I upgraded for our Domain controllers from 2012 → 2022 now receiving this message. http: proxy error: dial tcp: lookup ([internalwebsite.com](http://internalwebsite.com)): No address associated with hostname\n Would restarting services for the server fix the issue or is it something else? Any input is appreciated, currently working through this. ---
**Author:** ![kkirk](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/k/4bbf92/32.png) [@kkirk](https://forum.pritunl.com/u/kkirk)\ **Post date:** [November 13, 2023, 12:55pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/2 "2023-11-13T12:55:33Z")
Seems like a certificate for the internal web server isnt on the new DC? Maybe? ---
**Author:** ![kkirk](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/k/4bbf92/32.png) [@kkirk](https://forum.pritunl.com/u/kkirk)\ **Post date:** [November 13, 2023, 6:04pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/3 "2023-11-13T18:04:40Z")
I’m into the server via ssh, but really don’t know where to begin. ---
**Author:** ![kkirk](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/k/4bbf92/32.png) [@kkirk](https://forum.pritunl.com/u/kkirk)\ **Post date:** [November 15, 2023, 1:19pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/4 "2023-11-15T13:19:23Z")
So after restarting and looking into logs… Web server certificate error Does anyone know what to do in this situation? I’ve been researching to no avail. Found this in documentation. If a hostname is used in Pritunl Zero the internal server must have a valid certificate. Is this in reference to the SSL cert for the internal webserver? ---
**Author:** ![zach](https://forum.pritunl.com/user_avatar/forum.pritunl.com/zach/32/1105_2.png) [@zach](https://forum.pritunl.com/u/zach)\ **Post date:** [November 16, 2023, 9:54pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/5 "2023-11-16T21:54:01Z")
For most configurations the internal server should be an IP address. If it is a domain it will require the internal server to return a valid certificate. You can run `sudo pritunl-zero set router skip_verify true` to ignore invalid certificates on internal servers. ---
**Author:** ![kkirk](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/k/4bbf92/32.png) [@kkirk](https://forum.pritunl.com/u/kkirk)\ **Post date:** [December 1, 2023, 6:41pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/6 "2023-12-01T18:41:43Z")
Unfortunately this didn’t work. ---
**Author:** ![zach](https://forum.pritunl.com/user_avatar/forum.pritunl.com/zach/32/1105_2.png) [@zach](https://forum.pritunl.com/u/zach)\ **Post date:** [December 1, 2023, 10:17pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/7 "2023-12-01T22:17:06Z")
I need the full error message to see specifically what error is occurring. ---
**Author:** ![kkirk](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/k/4bbf92/32.png) [@kkirk](https://forum.pritunl.com/u/kkirk)\ **Post date:** [December 4, 2023, 7:09pm UTC](https://forum.pritunl.com/t/error-node-proxy-server-error/1542/9 "2023-12-04T19:09:05Z")
What log file should I look up?