Workspace settings error blocks new chats

“On Windows, new chats in both ChatGPT Work and Codex cannot send messages.”

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I hit this bug: rapsheet.dev/sheets/codex/themes/119/file
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Fading. No reports and thumbs-up in the last 7 days and 5 the week before, down from 16 a week at the early-October peak.

3 bugs in this theme

Workspace settings block new chatsHas a workaround38 people
New chats blocked by workspace settings load errorNo workaround yet2 people
Desktop app fails to load workspace with HTTP 403 and lockdown errorsNo workaround yet2 people

What's included

New Codex or Work chat shows "Couldn't load workspace settings / Retry to continue chatting" and Send stays disabled
Logs show HTTP 403 cloudflare_challenge on /settings/user and /accounts/check on Windows
macOS DeviceCheck registration returns 403 after successful attestation
"Local Work executor registration failed (HTTP 403)" or "Unable to check Lockdown Mode" banners after launch or reboot
Retry, restart, reinstall or sign-out/in gives no lasting recovery while the web app keeps working

Not included

Existing desktop conversations failing to accept messages
Sign-in or login failures on the web app

Original reports24, newest first

Oct 29, 2026Errors with Desktop AppOn GitHub#58008
Oct 26, 2026Unable to Load Workspace Settings: Cloudflare 403 with No Verification PromptOn GitHub#57039
Oct 20, 2026Windows: new chats blocked by workspace settings Cloudflare 403 while existing chats still workOn GitHub#55513
Oct 20, 2026Codex macOS: Unable to create new chats due to DeviceCheck token generation failureOn GitHub#55496
Oct 20, 2026Desktop: “Couldn’t load workspace settings” blocks messages; web works, re-login soon fails again. Logs: /settings/user, /accounts/check/{version}: 403 cloudflare_challenge; 432 routing unavailable. v26.1013.40934: check security & workspace recoveryOn GitHub#55489
Oct 16, 2026[Windows desktop] Your dot disappears and new chats are blocked by workspace-settings errors during repeated Cloudflare challengesOn GitHub#54550
Oct 14, 2026[Windows app 26.1007.71326] Work and Codex new chats blocked by workspace settings errors; HTTP 403 cloudflare_challengeOn GitHub#53975
Oct 14, 2026Unable to type and use the app normallyOn GitHub#53973
Oct 14, 2026macOS: new Codex chats blocked by workspace settings error; DeviceCheck registration returns 403 despite successful attestationOn GitHub#53903
Oct 13, 2026Windows Codex persistently fails to load workspace settings for new chatsOn GitHub#53609

Show all 24Show only the newest 10

Oct 13, 2026[macOS desktop] New chats fail to load workspace settings while existing chats work (403 cloudflare_challenge)On GitHub#53597
Oct 12, 2026[Windows] New Codex chats cannot send messages — workspace settings fail with cloudflare_challengeOn GitHub#53384
Oct 12, 2026macOS desktop new-chat composer blocked by workspace-settings load error; DeviceCheck registration returns 403 after sign-in and reinstallOn GitHub#53333
Oct 10, 2026[Windows 11] Intermittent workspace initialization failure after reboot — HTTP 403 and Lockdown Mode errorsOn GitHub#53035
Oct 10, 2026Windows: New chats blocked by workspace settings verification; built-in feedback also unavailableOn GitHub#52874
Oct 10, 2026Windows desktop: new chats blocked by workspace settings Cloudflare challenge; sign-out/in restores access temporarilyOn GitHub#52790
Oct 9, 2026Codex App projects intermittently disappear and new chats fail — DeviceCheck registration failed (403)On GitHub#52758
Oct 9, 2026DeviceCheck registration failed (403)On GitHub#52746
Oct 9, 2026Windows: persistent workspace settings Cloudflare 403; sending during Retry can start a chatOn GitHub#52539
Oct 9, 2026Unable to load workspace settingsOn GitHub#52437
Oct 8, 2026New chat fails with "Failed to load workspace settings" after update to 26.1002.52244 — /accounts/check now hard-fails when DeviceCheck token generation fails (macOS)On GitHub#52342
Oct 8, 2026[macOS M1][26.1002.52244] New-chat composer blocked by DeviceCheck failure; existing chats still workOn GitHub#52001
Oct 7, 2026Windows desktop workspace settings blocked by Cloudflare challenge across restart/update; recovery after normal browser access, token refresh and RetryOn GitHub#51691
Oct 7, 2026[macOS VM] Codex messages blocked after updating to 26.1002.52244On GitHub#51667