WSL2 sandbox fails to start

“Codex on Windows with a WSL2 backend cannot execute commands in its normal sandbox.”

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/codex/issues/15100/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

Quiet. No reports and thumbs-up in the last two weeks, down from 30 a week at the late-September peak.

WSL2 sandbox fails to start on /mnt/wslg/distro mount. Every sandboxed command, including pwd and apply_patch, fails before execution in WSL2 with WSLg enabled; persists after reboot.

Is this your bug?

File my report

Where: WSL2 sandbox
Error text: error building bubblewrap command: app-server socket directory has an unsupported host mount at /mnt/wslg/distro; remove the bind-mount alias or nested mount before starting the sandboxPasted in 6 reports
Versions: 0.155.0 to 26.917.62051
Platforms: Windows
How bad: Stops work: a core feature can't be used. Some reports say it blocks them completely.

Part of: Linux sandbox rejects host mounts4 bugs

Sandbox mountinfo path error81 people
Sandbox fails on overmounts4 people
Sandbox socket mount isolation fails10 people

Not quite your bug?

WSL agent commands fail to spawn70 people

Original reports8, newest first

Sep 28, 2026VS Code extension in Ubuntu WSL2 fails to start bubblewrap sandboxOn GitHub#48976
Sep 25, 2026WSL2 sandbox rejects standard Snap nsfs and /mnt/wslg/distro mountsOn GitHub#48061
Sep 25, 2026WSL2 sandbox fails to start: unsupported host mount at /mnt/wslg/distroOn GitHub#48053
Sep 24, 2026Sandbox fails on WSL2 with WSLg: "app-server socket directory has an unsupported host mount at /mnt/wslg/distro"On GitHub#47849
Sep 23, 2026bubblewrap errorOn GitHub#47681
Sep 23, 2026WSL: Codex bubblewrap sandbox fails on nested /mnt/wslg/distro shared mountOn GitHub#47527
Sep 23, 2026WSL2 sandbox fails before command execution: unsupported host mount at /mnt/wslg/distroOn GitHub#47465
Sep 22, 2026[WSL2] codex sandbox fails because /mnt/wslg/distro is reported as an unsupported host mountOn GitHub#47429