Claude Desktop v1.1.4498 crashes on launch - macOS 26.4 beta

[ExpertVagabond]

Bug Report

Claude Desktop crashes immediately on launch (within ~13 seconds) every time. Consistent repro — 4 crashes in a row.

Environment

• App version: 1.1.4498
• macOS: 26.4 beta (build 25E5207k)
• Hardware: Mac14,15 (Apple Silicon, M2)
• Electron Framework: 40.4.1

Crash Details

• Exception: EXC_BREAKPOINT (SIGTRAP) on main thread (com.apple.main-thread)
• Crash location: Electron Framework / V8 engine (v8::CpuProfileNode::GetNodeId())
• Signal: SIGTRAP — hits a fatal assertion during startup
• Timing: App launches and crashes within ~13 seconds, never reaches UI

Steps to Reproduce

1. Install Claude Desktop v1.1.4498 on macOS 26.4 beta
2. Launch the app
3. App crashes immediately

What I've Tried (all still crash)

• Clean reinstall (deleted app, re-downloaded, reinstalled)
• Cleared ~/Library/Application Support/Claude/Cache and GPUCache
• Launched with --disable-gpu
• Launched with --disable-gpu --disable-software-rasterizer --disable-gpu-compositing --in-process-gpu

Crash Reports

4 crash reports available at ~/Library/Logs/DiagnosticReports/Claude-2026-02-28-*.ips

Crash stack trace (faulting thread)

Thread 0 (com.apple.main-thread) — triggered crash:
  v8::CpuProfileNode::GetNodeId() const + 97348
  v8::CpuProfileNode::GetNodeId() const + 168616
  rust_png$cxxbridge1$Reader$try_get_chrm + 171196
  _v8_internal_Node_Print(void*) + 5952188
  v8::Isolate::RequestInterrupt + 50048
  v8::TryCatch::Exception() const + 584
  v8::ObjectTemplate::SetHandler + 40500
  ElectronMain + 120
  start + 6992

Workaround

Using Claude Code (CLI) and claude.ai in browser as alternatives.

[github-actions]

Found 3 possible duplicate issues:

1. [Claude Desktop] App crash-loops on relaunch after quitting during onboarding #25906
2. [BUG] Claude Desktop v1.1.4173 — Blank window on launch due to @formatjs/intl getInitialLocale error (macOS Monterey 12.6.2) #28497
3. [BUG] Claude Desktop 1.1.4173 fails to show GUI — @formatjs/intl unhandled promise rejection crashes renderer #28271

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

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🤖 Generated with Claude Code

[mchesbro1]

I have the same issue - but on MacOS Tahoe 26.3, with MacBookPro18,3
checked the 3 links provided by Claude Code bot and can confirm this is not the same problem
have reverted to 1.1.4088 and can confirm same problem

Resolved it - I had corrrupted my claude_desktop_config.json file - I fixed it and Claude Desktoo works fine

[nerdx86]

Same version (v1.1.4498) also crashes on Windows 10 Enterprise N LTSC 2019 (build 17763), not just macOS.

On Windows the crash manifests as BEX exception 0xc0000409 at offset 0x0000e892 in claude.exe itself (not V8/Electron like the macOS crash). The root cause on Windows is a missing id field in a formatMessage() call in the Cowork/yukonSilver VM check -- see #28470 for the full diagnosis.

Two separate processes crashed identically within 26 seconds, confirming it is deterministic in the binary. WER crash dumps were generated.

Environment: Dell laptop, Intel i7-10850H, 64GB RAM, Squirrel install, Claude MAX account. Pinned to older version as workaround.

This version appears to be broadly broken across both macOS and Windows, through different crash paths.

[github-actions]

Closing for now — inactive for too long. Please open a new issue if this is still relevant.

[github-actions]

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.