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Codex task error #51242
Description
Activity
- addedappIssues related to the Codex desktop appIssues related to the Codex desktop app
on Oct 6, 2026 - addedbugSomething isn't workingSomething isn't workingwindows-osIssues related to Codex on Windows systemsIssues related to Codex on Windows systems
on Oct 6, 2026 English translation:
What version of the Codex App are you using (From “About Codex” dialog)?
26.909.11814
What subscription do you have?
plus
What platform is your computer?
win11
What issue are you seeing?
Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).
Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.Attributed from local rollout logs (8 failures, 0 on 5.x):
gpt-6.1-sol x4
gpt-6-luna x3
gpt-6-astra x1
gpt-5.6-sol / gpt-5.6-luna: 0 failuresFailing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
01a10f03-7e5f-7f83-8637-8bdaa3b2049c
Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.What steps can reproduce the bug?
Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).
Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.Attributed from local rollout logs (8 failures, 0 on 5.x):
gpt-6.1-sol x4
gpt-6-luna x3
gpt-6-astra x1
gpt-5.6-sol / gpt-5.6-luna: 0 failuresFailing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
01a10f03-7e5f-7f83-8637-8bdaa3b2049c
Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.What is the expected behavior?
No response
Additional information
No response
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
- [Windows][Codex Desktop] GPT-6 models (Astra/Sol) reject every prompt with invalid_prompt, GPT-5.6 works fine #50657
- False-positive invalid_prompt in Codex App on GPT-6 Sol / GPT-6.1 Sol / GPT-6 Astra while GPT-5.6 Sol works #50605
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What version of the Codex App are you using (From “About Codex” dialog)?
26.909.11814
What subscription do you have?
plus
What platform is your computer?
win11
What issue are you seeing?
Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).
Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.
Attributed from local rollout logs (8 failures, 0 on 5.x):
gpt-6.1-sol x4
gpt-6-luna x3
gpt-6-astra x1
gpt-5.6-sol / gpt-5.6-luna: 0 failures
Failing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
01a10f03-7e5f-7f83-8637-8bdaa3b2049c
Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.
What steps can reproduce the bug?
Windows, Codex App 26.930.51102, ChatGPT login (auth_mode=chatgpt, no relay/API key).
Exactly matches the report: all GPT-6 family models fail with invalid_prompt on
trivial prompts, while GPT-5.6 works in the SAME session and the SAME thread.
Attributed from local rollout logs (8 failures, 0 on 5.x):
gpt-6.1-sol x4
gpt-6-luna x3
gpt-6-astra x1
gpt-5.6-sol / gpt-5.6-luna: 0 failures
Failing turn ids: 01a10ee3-117c-7701-a665-41ce53c92e13,
01a10f03-7e5f-7f83-8637-8bdaa3b2049c
Switching the same thread to gpt-5.6-sol succeeds, so context is not the trigger.
What is the expected behavior?
No response
Additional information
No response