[BUG] Unable to Delete Sessions in Claude Code Web

Preflight Checklist

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

What's Wrong?

Hello,

I am a Max subscriber and I would like to report a persistent issue with Claude Code on the web.

Sessions cannot be deleted. Despite repeated feedback and warnings regarding this problem, the issue still persists. This creates serious concerns regarding privacy, data control, and overall user experience.

Could you please clarify:

Whether this is a known issue

If a fix is planned

Any available workaround

Thank you for your attention to this matter.

What Should Happen?

Users should be able to permanently delete their Claude Code web sessions.

Error Messages/Logs

https://claude.ai/session-proxy/session_*

{
    "type": "error",
    "error": {
        "type": "not_found_error",
        "message": "Not Found"
    },
    "request_id": "req_*"
}

Steps to Reproduce

Failed to delete session. You can try again.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

4.6

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_