Claude Desktop v1.1.4328: HTTP-type MCP servers crash app on startup with TypeError in logger

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?

Description

Any HTTP-type MCP server entry in claude_desktop_config.json causes Claude Desktop to crash on startup with a
TypeError in the internal logger. The app shows the "failed to launch" error screen and produces a
launch-failure.err file. stdio-type MCP servers work fine.

## Environment

• Claude Desktop version: 1.1.4328
• OS: Windows 11 Enterprise (10.0.26100)
• Architecture: x64

## Steps to Reproduce

1. Add any HTTP-type MCP server to claude_desktop_config.json, e.g.:

```json
{
"mcpServers": {
"atlassian": {
"type": "http",
"url": "https://mcp.atlassian.com/v1/mcp"
}
}
}

1. Launch Claude Desktop
2. App fails to open — shows "failed to launch" error screen

Error (launch-failure.err)

TypeError: Cannot read properties of undefined (reading 'value')
{}
Cannot read properties of undefined (reading 'value')}
TypeError: Cannot read properties of undefined (reading 'value')
at formatProperty (node:internal/util/inspect:2280:12)
at formatRaw (node:internal/util/inspect:1176:9)
at formatValue (node:internal/util/inspect:932:10)
at formatProperty (node:internal/util/inspect:2283:11)
at formatRaw (node:internal/util/inspect:1176:9)
at formatValue (node:internal/util/inspect:932:10)
at inspect (node:internal/util/inspect:409:10)
at formatWithOptionsInternal (node:internal/util/inspect:2582:25)
at Object.format (node:internal/util/inspect:2502:10)
at i._splat (C:\Users\...\AnthropicClaude\app-1.1.4328\resources\app.asar\.vite\build\index.js:65:5632)

Additional Notes

• Crash occurs with any HTTP MCP server regardless of URL or whether "type": "http" is present
• Confirmed on both v1.1.4010 and v1.1.4328 (fresh install)
• stdio MCP servers (local exe, pipx) work correctly
• Workaround: remove all HTTP MCP servers from config — app launches normally
• The same HTTP MCP configs worked on a colleague's machine running an older version of Claude Desktop

What Should Happen?

should connect to the mcp servers without issue

Error Messages/Logs

TypeError: Cannot read properties of undefined (reading 'value')
  {}
  Cannot read properties of undefined (reading 'value')}
  TypeError: Cannot read properties of undefined (reading 'value')
      at formatProperty (node:internal/util/inspect:2280:12)
      at formatRaw (node:internal/util/inspect:1176:9)
      at formatValue (node:internal/util/inspect:932:10)
      at formatProperty (node:internal/util/inspect:2283:11)
      at formatRaw (node:internal/util/inspect:1176:9)
      at formatValue (node:internal/util/inspect:932:10)
      at inspect (node:internal/util/inspect:409:10)
      at formatWithOptionsInternal (node:internal/util/inspect:2582:25)
      at Object.format (node:internal/util/inspect:2502:10)
      at i._splat (C:\Users\...\AnthropicClaude\app-1.1.4328\resources\app.asar\.vite\build\index.js:65:5632)

Steps to Reproduce

1. Add any HTTP-type MCP server to claude_desktop_config.json, e.g.:

```json
{
"mcpServers": {
"atlassian": {
"type": "http",
"url": "https://mcp.atlassian.com/v1/mcp"
}
}
}

1. Launch Claude Desktop
2. App fails to open — shows "failed to launch" error screen

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

v1.1.4328

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Additional Notes

• Crash occurs with any HTTP MCP server regardless of URL or whether "type": "http" is present
• Confirmed on both v1.1.4010 and v1.1.4328 (fresh install)
• stdio MCP servers (local exe, pipx) work correctly
• Workaround: remove all HTTP MCP servers from config — app launches normally
• The same HTTP MCP configs worked on a colleague's machine running an older version of Claude Desktop