[BUG]

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?

ISSUES:
Why does my chat (one specific chat) in the Desktop Chat always hang, and Claude turns blank every time I open it? But it works fine in Claude.ai in the browser

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INTERNAL ANSWER FROM CLAUDE CODE

This is a known issue with the Claude Code desktop app when a conversation becomes very long or has a large context. A few likely causes:

Most common cause: Context/conversation too long

The desktop app loads the full conversation history upfront, which can hang or time out on very long sessions
Claude.ai in the browser uses lazy loading and server-side rendering, so it handles long histories better
Other possible causes:

Large file attachments in the conversation taking time to load
Local cache corruption in the desktop app
Things to try:

Start a new chat — if the existing conversation is very long, it may just be too large for the desktop app to handle gracefully
Clear the desktop app cache — close the app, then clear its local storage (on Windows, look in %APPDATA%\Claude or similar)
Check app version — make sure you're on the latest Claude Code desktop version
Report the bug — this is worth filing at github.com/anthropics/claude-code/issues so Anthropic can investigate
The fact that it works fine on Claude.ai browser but not desktop strongly points to a rendering/loading issue with a long conversation, not a problem with your account or the model itself. Starting a fresh chat for the Tasks Therapy Android App project would likely resolve it immediately.

What Should Happen?

In Claude.ai chat it open normal and all chat local files loaded too

Error Messages/Logs

Steps to Reproduce

I have tried reopening it multiple times since yesterday, and today I tested opening it in Claude.ai, and it works

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Claude 1.4758.0 (fb266c) 2026-04-24T20:22:30.000Z

Claude Code Version

Claude 1.4758.0 (fb266c) 2026-04-24T20:22:30.000Z

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_