Windows Codex app exits silently after Microsoft Store update scan fails

What version of the Codex App are you using (From “About Codex” dialog)?

26.707.3748.0

What subscription do you have?

ChatGPT Prolite

What platform is your computer?

Microsoft Windows NT 10.0.22631.0 x64

What issue are you seeing?

The Codex Windows desktop app exits unexpectedly during use.

Sometimes the app shows “Update downloading” and exits within 1–2 minutes. At other times, it runs normally for one or two hours without showing the update indicator, then exits silently.

The Codex process disappears completely from Task Manager, but Windows does not record a normal APPCRASH event.

Installed version

OpenAI.Codex 26.707.3748.0

Package:<br>OpenAI.Codex_26.707.3748.0_x64__2p2nqsd0c76g0

Reproduction

1. Open the Codex Windows desktop app.
2. Open a local project and use Codex normally.
3. Wait from several minutes to approximately two hours.
4. Codex exits and does not restart.

Sometimes “Update downloading” appears before the exit, but not always.

Expected behavior

A failed Microsoft Store update scan should not terminate the running Codex app.

Actual behavior

Codex exits silently and does not restart.

Diagnostics

I monitored codex.exe with Microsoft Sysinternals ProcDump.

ProcDump reported:

Process: codex.exe<br>Process image:<br>C:\\Program Files\\WindowsApps\\OpenAI.Codex_26.707.3748.0_x64__2p2nqsd0c76g0\\app\\resources\\codex.exe

Process Exit Code:<br>0x00000000

This means the process appears to use a normal exit path rather than generating a standard APPCRASH.

One reproduced timeline was:

• 16:05:49 — Background Intelligent Transfer Service was changed from demand start to automatic.
• 16:06:23 — Windows Error Reporting logged StoreAgentScanForUpdatesFailure0 with error 80072efd.
• 16:06:24 — codex.exe exited with code 0x00000000.
• 16:06:25 — the same StoreAgent update failure was archived.

Windows Event Reporting details:

Event name:<br>StoreAgentScanForUpdatesFailure0

P1:<br>Update

P2:<br>80072efd

Windows build:<br>22631

Troubleshooting already attempted

• Repair from Windows Settings
• Reset from Windows Settings
• Uninstall and reinstall from Microsoft Store
• wsreset.exe
• TUN mode enabled and disabled
• UWP loopback exemptions enabled and disabled for Codex and Microsoft Store
• Different proxy providers and nodes
• Microsoft Store automatic update troubleshooting
• Microsoft Store and Codex app reset
• Reinstalling the official OpenAI.Codex package

The problem still reproduces.

The Codex app works correctly on another Windows computer after that computer received a newer update.

Dump file

A full ProcDump file was captured:

codex.exe_260713_160624.dmp

Size:<br>Approximately 484 MB

I have not uploaded the dump publicly because it may contain sensitive process memory, project paths, authentication data, or conversation content. Please provide a secure upload method if the dump is required.

What steps can reproduce the bug?

1. Launch the Codex Windows desktop app.
2. Open a local project and use Codex normally.
3. Leave the app running and continue working for several minutes to approximately two hours.
4. Codex exits silently and disappears from Task Manager.
5. In some reproductions, “Update downloading” appears shortly before the exit. In other reproductions, no update indicator is shown.

The issue is intermittent, but it has reproduced repeatedly on this computer.

In one captured reproduction:

• 16:05:49 — Background Intelligent Transfer Service changed from demand start to automatic.
• 16:06:23 — Windows Error Reporting logged StoreAgentScanForUpdatesFailure0 with error 80072efd.
• 16:06:24 — ProcDump recorded codex.exe exiting with code 0x00000000.
• 16:06:25 — The same StoreAgent failure was archived.

What is the expected behavior?

Codex should remain open and continue running during normal development work.

A failed Microsoft Store update scan should not terminate the active Codex process.

If an update cannot be downloaded, Codex should continue running and display an actionable error message instead of exiting silently.

Additional information

The Codex CLI continues to work on the same computer.

Repair, Reset, uninstall/reinstall, wsreset.exe, different proxy providers, TUN mode changes, and UWP loopback exemption changes did not resolve the issue.

A full ProcDump was captured:

codex.exe_260713_160624.dmp<br>Approximate size: 484 MB

I have not uploaded the dump publicly because it may contain sensitive process memory, authentication data, project paths, or conversation content. Please provide a secure upload method if the dump is needed.

Possibly related issues are openai/codex#30338 and openai/codex#28236, but this case differs because Codex can usually be reopened and used for a while, and the exit is closely correlated with StoreAgentScanForUpdatesFailure0 (80072efd).