codex_app MCP fails in dot tasks

“A task created by dot and executed on the connected Windows computer could not access codex_app tools to continue an existing user-created local thread.”

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/13901/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 in the last two weeks, down from 2 a week at the early-October peak. A workaround is known.

codex_app MCP fails to start in dot-created Windows tasks. Dot-connected Windows tasks run commands but lack native thread tools like read_thread, while ordinary local threads work.

Is this your bug?

File my report

Where: codex_app MCP server
Error text: MCP startup failed: handshaking with MCP server failed: connection closed: initialize response: connection closed: initialize response
Versions: 0.160.0
Platforms: Windows
How bad: Breaks a normal workflow. Some reports say it used to work.

Part of: Dot can't access local threads12 bugs

Dot cannot read local threads57 people
Dot cloud task create and continue fail with UNKNOWN18 people
Dot task coordination fails15 people
list_threads/read_thread fail6 people
Dot can't reach local threads7 people
Existing thread read fails5 people
Dot local task creation fails3 people
Thread tools missing from tasks5 people
Remote session read fails5 people
Dots tasks missing browser tools5 people

Show all 11Show only the largest 10

Dot tasks missing browser tools10 people

Not quite your bug?

MCP tools missing in tasks13 people
codex_apps MCP decoding failure18 people

Original reports3, newest first

Oct 4, 2026Windows: durable codex_app MCP startup fails while local thread tools work (26.930.31730)On GitHub#51000
Oct 4, 2026Windows: codex_app tools unavailable in dot-created tasks; recover after SystemRoot launcher workaroundOn GitHub#50982
Sep 30, 2026Remote MCP on Windows drops SystemRoot with Unix controller defaults; bundled Node aborts before initializeOn GitHub#49820