● 14 articles on AI, development and infrastructure
Since October 21, 2026 the Codex app fails to start Worktree chats with "Cannot serialize value: (couldn't stringify value)". Local works. Here are the workarounds and commands.
The Codex app comes back from the browser with "OAuth state not found" and the plugin never connects. The failure is server side; here is the workaround for hosted plugins and for your own MCP via the CLI.
The bar says 55% and Codex is already compacting. The compaction counter adds past reasoning twice. How to confirm it and what to configure today.
Articles on AI, coding, and developer tools. No spam.
Codex browser control on Windows failing with "MXC launcher ... HRESULT 0x80070003" in dot tasks? See the cause in the source (SystemDrive is missing), how to confirm it, and the workaround that works until the fix ships.
Every Codex command on Windows fails with "helper_unknown_error: setup refresh had errors"? Find the cause in the log and the right fix for each one, including the October 2026 regression (os error 32) that already has a fix.
Enter clears the input and the message never reaches Codex? It is a VS Code extension bug, fixed in 26.930.41038. Here is how to confirm it, update and, if needed, roll back.
The Codex 401 "Incorrect API key provided" has 3 causes and only one is yours. The masked key suffix in the message tells you which, and each case has a command.
Codex Desktop stuck on a white screen or an endless spinner? When it happens points to the cause: app-server hung after an update, a renderer out of memory, or a corrupted config.toml. Here is the command for each.
"Unexpected status 404 Not Found" in Codex has three different causes. The text after the 404 tells you which one: an OpenAI outage, a model missing from the catalog, or an old flag in config.toml.
The Codex Desktop app on Windows breaks with status 432 and "Workspace routing is unavailable": your account still shows up, but usage, plugins and task history disappear. Here's why only Desktop breaks, what's confirmed as the cause, and the real steps to fix it now.
Since version 0.15.30, Verboo Code's /resume picks up sessions created in the Codex CLI and converts the history to native format on the spot. A real walkthrough, verified in the source code.
The "Selected model is at capacity" error started showing up in Codex after the GPT-6 Astra launch. See how to confirm it's OpenAI's server, not your quota, and how to set up a fallback provider in config.toml.