# Unexpected status 404 Not Found: **URL:** \ **Category:** Codex\ **Tags:** status\ **Created:** [September 3, 2026, 3:01pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620 "2026-09-03T15:01:53Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![karolplu](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/karolplu/32/745267_2.png) [@karolplu](https://community.openai.com/u/karolplu)\ **Post date:** [September 3, 2026, 3:01pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/1 "2026-09-03T15:01:53Z")
unexpected status 404 Not Found: Unknown error, url: [https://chatgpt.com/backend-api/codex/responses](https://chatgpt.com/backend-api/codex/responses), cf-ray: [https://status.openai.com/](https://status.openai.com/) Well well, we die. ---
**Author:** ![guruprasad.hegde](https://avatars.discourse-cdn.com/v4/letter/g/2bfe46/32.png) [@guruprasad.hegde](https://community.openai.com/u/guruprasad.hegde)\ **Post date:** [September 3, 2026, 3:07pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/2 "2026-09-03T15:07:03Z")
Hi, I am unable to to sign in to codex account with codex cli, Get this error when i tried to proceed with email method sign in using gmail. It was working few hours before. any one seeing this? Tried using incognito page as well. issue seems to be on openai server side. ![Screenshot from 2026-09-03 20-31-44](https://us1.discourse-cdn.com/openai1/original/4X/2/b/e/2bef541830b81897f4c6e0a1bcc2bda16984da59.png) ---
**Author:** ![EricGT](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/ericgt/32/20571_2.png) [@EricGT](https://community.openai.com/u/EricGT)\ **Post date:** [September 3, 2026, 3:16pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/3 "2026-09-03T15:16:14Z")
Welcome to the forum! See > **[OpenAI Status](https://status.openai.com/)** > > Latest service status for OpenAI ---
**Author:** ![urbanslicker](https://avatars.discourse-cdn.com/v4/letter/u/53a042/32.png) [@urbanslicker](https://community.openai.com/u/urbanslicker)\ **Post date:** [September 3, 2026, 3:05pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/4 "2026-09-03T15:05:53Z")
**Title:** Codex returning 404 on backend-api/codex/responses — no config changes made **What version of the Codex App/CLI are you using?** fill in — check "About Codex" or run `codex --version` **What subscription do you have?** Plus / Pro / Team / etc. **What platform is your computer?** macOS / Windows / Linux — include architecture if known **What issue are you seeing?** Codex (both the chat interface and CLI) started failing this morning with a 404 error. It had been working normally earlier in the session, then suddenly began failing with no changes made to my configuration or settings. Error message: ```auto unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a355978b9cbdbe08-LAX ``` **Steps to reproduce:** 1. Had a working Codex session this morning 2. Session suddenly began returning the above 404 error 3. Error persists on retry, affects both chat and CLI **Additional context:** No configuration or settings changes were made prior to the error appearing. OpenAI’s status page showed no active incident at the time. ---
**Author:** ![rbarnes](https://avatars.discourse-cdn.com/v4/letter/r/b9bd4f/32.png) [@rbarnes](https://community.openai.com/u/rbarnes)\ **Post date:** [September 3, 2026, 3:09pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/6 "2026-09-03T15:09:49Z")
I’m getting the same error. Both Chat and CLI. Is there an ETA to a solution? ---
**Author:** ![Claudiu\_Radu](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/claudiu_radu/32/753820_2.png) [@Claudiu\_Radu](https://community.openai.com/u/Claudiu_Radu)\ **Post date:** [September 3, 2026, 3:11pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/7 "2026-09-03T15:11:19Z")
same 404 Not Found: Unknown error error her ---
**Author:** ![CySlider](https://avatars.discourse-cdn.com/v4/letter/c/848f3c/32.png) [@CySlider](https://community.openai.com/u/CySlider)\ **Post date:** [September 3, 2026, 3:16pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/8 "2026-09-03T15:16:59Z")
seems like they have some trouble releasing Astra I bet: ![grafik](https://us1.discourse-cdn.com/openai1/original/4X/3/2/6/326c51e3153f83c7c3c2b6e0a21744a4ff2df990.jpeg) ---
**Author:** ![sps](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/sps/32/7736_2.png) [@sps](https://community.openai.com/u/sps)\ **Post date:** [September 3, 2026, 3:19pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/10 "2026-09-03T15:19:35Z")
---
**Author:** ![EricGT](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/ericgt/32/20571_2.png) [@EricGT](https://community.openai.com/u/EricGT)\ **Post date:** [September 3, 2026, 3:20pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/11 "2026-09-03T15:20:22Z")
---
**Author:** ![jochenschultz](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/jochenschultz/32/491030_2.png) [@jochenschultz](https://community.openai.com/u/jochenschultz)\ **Post date:** [September 3, 2026, 3:22pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/12 "2026-09-03T15:22:52Z")
Claude went down first.. I suppose many guys switched and overloaded Codex too… ---
**Author:** ![jochenschultz](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/jochenschultz/32/491030_2.png) [@jochenschultz](https://community.openai.com/u/jochenschultz)\ **Post date:** [September 3, 2026, 3:24pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/13 "2026-09-03T15:24:57Z")
And it could take several hours. I bet many of you - like myself - didn’t sleep well for quiet some time. Get some rest! Sometimes this happens. ---
**Author:** ![zhakataka](https://avatars.discourse-cdn.com/v4/letter/z/e19adc/32.png) [@zhakataka](https://community.openai.com/u/zhakataka)\ **Post date:** [September 3, 2026, 2:56pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/14 "2026-09-03T14:56:40Z")
Same here. Tried multiple times. Gives me 404 ---
**Author:** ![qxrsirvent](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/qxrsirvent/32/760277_2.png) [@qxrsirvent](https://community.openai.com/u/qxrsirvent)\ **Post date:** [September 3, 2026, 2:57pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/15 "2026-09-03T14:57:39Z")
I’m experiencing this now right before a major project is due. Wtf… how is it a 404 error??? ---
**Author:** ![jackooneplus](https://avatars.discourse-cdn.com/v4/letter/j/22d042/32.png) [@jackooneplus](https://community.openai.com/u/jackooneplus)\ **Post date:** [September 3, 2026, 2:58pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/16 "2026-09-03T14:58:23Z")
Im also down. At least it isnt just me i guess. ---
**Author:** ![simswc](https://avatars.discourse-cdn.com/v4/letter/s/779978/32.png) [@simswc](https://community.openai.com/u/simswc)\ **Post date:** [September 3, 2026, 2:59pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/17 "2026-09-03T14:59:18Z")
Same issue when trying to access via crhome browser on my PC and an error message "Hmm… something seems to have gone wrong. ---
**Author:** ![username000](https://avatars.discourse-cdn.com/v4/letter/u/e47774/32.png) [@username000](https://community.openai.com/u/username000)\ **Post date:** [September 3, 2026, 3:00pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/18 "2026-09-03T15:00:37Z")
Same with me, the F’s happening? ---
**Author:** ![TheAIguyy](https://avatars.discourse-cdn.com/v4/letter/t/eb8c5e/32.png) [@TheAIguyy](https://community.openai.com/u/TheAIguyy)\ **Post date:** [September 3, 2026, 3:01pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/19 "2026-09-03T15:01:42Z")
I’m down as well, what is going on ---
**Author:** ![pohyuen27](https://avatars.discourse-cdn.com/v4/letter/p/ea666f/32.png) [@pohyuen27](https://community.openai.com/u/pohyuen27)\ **Post date:** [September 3, 2026, 3:02pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/20 "2026-09-03T15:02:26Z")
Same here. Same for gemini ---
**Author:** ![viviensojkova](https://avatars.discourse-cdn.com/v4/letter/v/c5a1d2/32.png) [@viviensojkova](https://community.openai.com/u/viviensojkova)\ **Post date:** [September 3, 2026, 3:02pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/21 "2026-09-03T15:02:47Z")
Same here, I type it into the browser and get this: This page can’t be found No web page was found for the web address: HTTP ERROR 404 ---
**Author:** ![sakshiimali024](https://avatars.discourse-cdn.com/v4/letter/s/7c8e57/32.png) [@sakshiimali024](https://community.openai.com/u/sakshiimali024)\ **Post date:** [September 3, 2026, 3:02pm UTC](https://community.openai.com/t/unexpected-status-404-not-found/1394620/22 "2026-09-03T15:02:51Z")
hello there whats wrong with the chatgpt ??? [Next page](https://community.openai.com/t/unexpected-status-404-not-found/1394620.md?page=2)