[BUG] Visualstudio code - Error: Claude Code process exited with code 3

[sveinl]

Preflight Checklist

• I have searched existing issues and this hasn't been reported yet
• This is a single bug report (please file separate reports for different bugs)
• I am using the latest version of Claude Code

What's Wrong?

After upgrading from API access to Pro-subscription vscode extension gives this error:
Error: Claude Code process exited with code 3

I have tried everything but nothing have solved the problem yet.

What Should Happen?

Claude code should prompt me for a message without the error code.

Error Messages/Logs

Claude Code stderr: ============================================================Bun v1.2.23 (cf136713) Windows x64 (baseline)Windows v.win11_dtCPU: sse42 avx avx2Args: "c:\Users\XXX\.vscode\extensions\anthropic.claude-code-2.0.10-win32-x64\resources\native-binary\claude.exe" "--output-format" "stream-json" "--verbose" "--input-format" "stream-json" "--append-system-prompt" "\n# VSCode"...Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) jsc spawn standalone_executable Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:domain" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/win32" Claude Code stderr: "node:perf_hooks" "node:process" "node:querystring" "node:stream" "node:string_decoder" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "undici" "ws" "node-fetch" "node:inspector" "node:http2" Elapsed: 370ms | User: 312ms | Sys: 93msRSS: Claude Code stderr: 0.44GB | Peak: 0.44GB | Commit: 0.58GB | Faults: 107670 | Machine: 68.45GBpanic(main thread): Unexpected errorENOTCONN: Transport endpoint is not connected (open())oh no: Bun has crashed. This indicates a bug in Bun, not your code.To send a redacted crash report to Bun's team,please file a GitHub issue using the link below: Claude Code stderr: https://bun.report/1.2.23/e_1cf13671Az//v//B+kjgXisjljB2wm7iB__0jg40CA0eNoLzUutKEhNLklNUUgtKsov4nL18w9x9vfzs1IIKUrMKy7ILypRSM1LKcjPzCtRyCxWyMsvUUjOz8uD6NHIL0jN09DUBACb+xkqClaude Code process exited with code 3

Steps to Reproduce

Just started vscode with an existing flutter app.
PS! This happened AFTER upgrading from API to PRO subscription.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

2.0.10

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

This error started happening AFTER i upgraded from API (one time payment) to PRO subscription.

[sveinl]

Selecting "Run claude in terminal" in settings works fine. But then i lose the ability to paste images etc. so would prefer using the extension one :)

[github-actions]

---

Found 1 possible duplicate issue:

1. [BUG] PowerShell installer crashes with Bun ENOTCONN error on Windows 11 #9060

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
• To prevent auto-closure, add a comment or 👎 this comment

🤖 Generated with Claude Code

---

[Fabio-Vision]

I’m experiencing the same problem.

[sveinl]

Yes, same... didnt find any other duplicates of this one.

[B4b0u]

Same thing for me there
Just upgraded claude code to 2.0.10, accepted new terms but can't using it with vs code and extension.
Works fine in terminal but not the most convenient.

[LiamWildDev]

I got the same issue, I was using the extension and then it froze and I got the error code. The terminal works fine. I tried uninstalling the extension and reinstalling, tried logging out and back into claude code, still doesn't work. I also tried restarting my pc and still nothing

[jingyu233]

I had the same issue. I just reverted to 2.0.9 to avoid this issue for now, hoping to revert soon.

[ucuc]

I had the same issue.

2025-10-09 15:10:42.573 [info] Launching Claude on channel: ******
2025-10-09 15:10:42.573 [info] Spawning Claude with SDK query function - cwd: [PATH], permission mode: default, version: 2.0.10, [EXTENSION_PATH]\claude.exe, resume: undefined
2025-10-09 15:10:43.009 [info] Closing Claude on channel: ******
2025-10-09 15:10:43.009 [error] Error from Claude (on channel ******): Error: Claude Code process exited with code 3

This issue occurred after updating from 2.0.9 to 2.0.10.
I am currently using the CLI on the terminal.

[jinganqian1]

遇到同样的问题.希望早点解决

[AmOfsi]

Selecting "Run claude in terminal" in settings works fine. But then i lose the ability to paste images etc. so would prefer using the extension one :)

You can use alt+v to paste images into the terminal interface (using that for now to circumvert this bug and I need to paste alot of images)