### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) 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? Remote-control sessions (browser/mobile) silently drop attachments — shown as sent, never reach the model **Environment**: Claude Code session hosted in

[BUG] Remote-control sessions (browser/mobile) silently drop attachments — shown as sent, never reach the model

Status Fixed / completed

Reported on v2.1.157

Maintainer reply None cached

Activity 3 comments · opened May 31, 2026 · closed Jul 14, 2026

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?

Remote-control sessions (browser/mobile) silently drop attachments — shown as sent, never reach the model

Environment: Claude Code session hosted in VS Code; continued via Remote Control from a separate browser / mobile-app device. Windows host.

Repro:

Start a session on the host device (VS Code extension).
Continue/drive that session from a remote device (browser or mobile app) via remote control.
From the remote device, attach an image/file to a message and send.

Actual behavior:
the remote client shows the attachment as successfully attached/submitted, but the model receives the text with no attachment. Attachments sent from the original host device arrive normally.

Impact: Silent data loss — the user believes an image/file was shared; the model can't see it and responds as if nothing was attached. No error is surfaced on the remote client.

What Should Happen?

Expected:
An attachment sent from a remote-control client (browser/mobile) should reach the model in that same message, exactly as it does from the host device — full parity regardless of origin device. If it genuinely can't be delivered, the client should show an error at send time, not a successful "sent."

Error Messages/Logs

Steps to Reproduce

Start a session on the host device (VS Code extension).
Continue/drive that session from a remote device (browser or mobile app) via remote control.
From the remote device, attach an image/file to a message and send.

Claude Model

Not sure / Multiple models

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Claude Code 2.1.157 (Windows host, VS Code extension session; continued via remote-control browser/mobile client)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

Claude Code 2.1.157 (Windows host, VS Code extension session; continued via remote-control browser/mobile client)

View original on GitHub ↗

3 Comments

jnctech · 4 months ago

Corroborating data point — same bug on the current build:

Claude Code 2.1.162, Windows 11 Pro (26200) host
Driven via remote control from a Samsung S22 (Android)
Image attached on the phone shows as sent; the model receives a text-only message — no image content block. No API 400, session continues normally.
Confirmed the bytes never reach the host (so it's a transport drop, not a read failure): full %USERPROFILE% scan for images modified in the last 6 h, %TEMP%, and clipboard GetImage() — all empty.

Filed #66836 before finding this; closing that as a duplicate of this one.

chaoshuai-ant · 3 months ago

fixed in 2.1.207

github-actions[bot] · 1 month ago

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.