Facing frequent stream disconnection issue while using Codex CLI

[D951516]

What version of Codex is running?

codex-cli 0.77.0

What subscription do you have?

Using Azure Microsoft Foundry Open AI Models

Which model were you using?

gpt-5-codex , gpt-5.1-codex

What platform is your computer?

Microsoft Windows NT 10.0.26100.0 x64

What issue are you seeing?

We are repeatedly experiencing streaming failures while executing commands using OpenAI models.
Users consistently encounter the following error:

stream disconnected before completion: response.failed event received

This occurs even for simple prompts, and the response stream fails before completion.

We also intermittently receive the following error:

"Item with id 'rs_06b3ecdc79f7f90b006957c907543438197a56565d3b3ff2278' not found."
"type": "invalid_request_error"
"param": "input"

Actions Taken So Far

To mitigate the streaming issue, we have already:

Increased the quota limits

Added stream retry logic/parameters to allow session continuation
→ This prevents the session from dropping immediately, but causes extreme slowness during execution

Even after these changes, the stream continues to disconnect intermittently.

What steps can reproduce the bug?

It is occurring randomly even for simple Hello message.

What is the expected behavior?

No response

Additional information

No response

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• Reconnecting error still not resolved with 5.2 #8854
• Disconnected Stream #8838

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[etraut-openai]

Have you reached out to the Azure team and reported this problem to them?

If this is something you can repro, please use the /feedback slash command to upload your logs and session details and post the thread ID here. This will help us provide additional diagnosis.

[D951516]

Yes, I have reached out to the Azure team, and they have done some troubleshooting. They advised contacting OpenAI and also checked and told me there are no quota-related issues.

Here is the thread ID: 019ba0ff-abfa-7de1-ae95-6ccd46017244

[D951516]

@etraut-openai Do you have any updates on this issue??

[etraut-openai]

This appears to be the same issue as #8371 and #8302. We're testing a fix for this internally and will roll it out once we're confident that it addresses the issue and doesn't cause any regressions.

[D951516]

Any ETA?? Please let us know once this is resolved.

[etraut-openai]

We think we have mitigated this issue. The more recent models (like 5.2) sometimes take longer to generate the next batch of tokens during streaming, and this can sometimes exceed an HTTP timeout value, which resulted in a stream disconnect.

I'm going to mark this bug as closed, but if you see this again in the next few days, please use /feedback to upload your logs and post your thread ID here.

[D951516]

Hi @etraut-openai, thanks for the update.
We generally use GPT-5.1-Codex or GPT-5-Codex. I will ask my team to try this out, but could you please confirm which Codex CLI version includes the fix so we can update accordingly?

[etraut-openai]

@D951516, make sure you're using the latest published version of the CLI (0.80.0).

[cvietor]

I am using 0.80.0 since yesterday and still face the same issue.
My thread id: 019bb884-e9de-7b81-a560-2132765632e1
I am also using gpt-5.1-codex, also gpt-5.1-codex-max