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codex - 💡(How to fix) Fix Windows Codex app deep link / OAuth callback fails: "Unable to find Electron app"

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Error Message

  • Error appears: "Unable to find Electron app"
  • Error path references:
RAW_BUFFERClick to expand / collapse

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

26.527.3686.0

What subscription do you have?

Pro

What platform is your computer?

Windows

What issue are you seeing?

Description: On Windows, Codex desktop app opens and Codex CLI works, but browser OAuth callbacks fail when signing in or connecting the Figma MCP plugin.

What happens:

  • Browser login succeeds and shows localhost:1455/success
  • Browser/Windows tries to open Codex
  • Error appears: "Unable to find Electron app"
  • Error path references: C:\Program Files\WindowsApps\OpenAI.Codex_26.527.3686.0_x64__2p2nqsd0c76g0\app\codex...\new
  • Same issue happens when connecting Figma MCP in Codex Plugins.

Environment:

  • Windows
  • Codex App version: 26.527.3686.0
  • Codex CLI version: 0.135.0
  • Browser: Microsoft Edge
  • Package: OpenAI.Codex_26.527.3686.0_x64__2p2nqsd0c76g0

Already tried:

  • Reset Codex app from Windows settings
  • Restarted Windows
  • Get-AppxPackage OpenAI.Codex | Reset-AppxPackage
  • Logged out/in
  • Installed Codex CLI
  • Figma plugin authorization reaches browser but callback back to Codex fails

Expected: Browser OAuth/deep link should return to the Codex desktop app and finish login/plugin setup.

What steps can reproduce the bug?

Feedback ID: no-active-thread-019e764f-97a0-7920-86ba-64c17e9675cb

What is the expected behavior?

No response

Additional information

No response

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codex - 💡(How to fix) Fix Windows Codex app deep link / OAuth callback fails: "Unable to find Electron app"