Locked Use plugin update failed on macOS Tahoe 26.5.1

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

26.616.41845

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Darwin 26.5.1 arm64 Apple Silicon (M1 Max)

What issue are you seeing?

When enabling "Locked Use" under Computer Use, Codex shows:

• Unable to update Locked Use settings
• Plugin update failed

Environment:

• Codex App 26.616.41845
• macOS Tahoe 26.5.1
• MacBook Pro 16-inch (2021)
• Apple M1 Max
• 64 GB RAM
• ChatGPT Pro subscription

What works:

• Computer Use is enabled
• Chrome integration works normally
• Codex launches and functions normally

What does not work:

• Locked Use cannot be enabled
• The toggle immediately fails with "Plugin update failed"

Troubleshooting already performed:

• Reinstalled Codex App
• Reset Accessibility permissions:

tccutil reset Accessibility

• Reset Screen Recording permissions:

tccutil reset ScreenCapture

• Restarted Codex
• Restarted macOS

Verification:
codesign:
TeamIdentifier=2DC432GLL2

spctl:
accepted
source=Notarized Developer ID

Additional observations:
No Codex helper appears to be installed under:

• /Library/PrivilegedHelperTools
• /Library/LaunchDaemons

Expected behavior:
Locked Use installs successfully and can be enabled.

Actual behavior:
The installation/update fails immediately with:
"Unable to update Locked Use settings"
"Plugin update failed"

<img width="755" height="540" alt="Image" src="https://github.com/user-attachments/assets/88f4c9c9-c81e-4ae7-9a34-9da2b23d61e7" />

What steps can reproduce the bug?

When enabling Locked Use, Codex should successfully install or update any required system components and enable the Locked Use feature without errors.

What is the expected behavior?

1. Open Codex App 26.616.41845 on macOS Tahoe 26.5.1.

1. Open Settings.

1. Navigate to Computer Use.

1. Enable Chrome Integration (works correctly).

1. Attempt to enable "Locked Use".

1. Codex immediately shows:

• Unable to update Locked Use settings
• Plugin update failed

1. The Locked Use toggle remains disabled.

Additional information

Additional diagnostics:

• MacBook Pro 16-inch (2021)
• Apple M1 Max
• 64 GB RAM
• macOS Tahoe 26.5.1
• ChatGPT Pro subscription

Troubleshooting already performed:

• Reinstalled Codex App
• Restarted macOS
• Reset Accessibility permissions:

tccutil reset Accessibility

• Reset Screen Recording permissions:

tccutil reset ScreenCapture

Verification results:

codesign:
TeamIdentifier=2DC432GLL2

spctl:
accepted
source=Notarized Developer ID

No Codex helper found in:

• /Library/PrivilegedHelperTools
• /Library/LaunchDaemons

Computer Use works.
Chrome integration works.
Only Locked Use fails.