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claude-code - 💡(How to fix) Fix [BUG] claude app crashes seconds after being opened

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Error Message

• Crash: App crashes ~10–15 seconds after launch. Crash log shows OOM error in V8: Ineffective mark-compacts near heap limit / Allocation failed - JavaScript heap out of memory, climbing to ~2GB before a SIGTRAP.

Error Messages/Logs

4.    App crashes with a V8 out-of-memory error (OOM error in V8: Ineffective mark-compacts near heap limit / Allocation failed - JavaScript heap out of memory), SIGTRAP.

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Preflight Checklist

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

What's Wrong?

App version: 1.9659.2 • macOS: 26.5 (25F71) • Hardware: MacBook Pro, Mac14,7 (Apple M2) • Crash: App crashes ~10–15 seconds after launch. Crash log shows OOM error in V8: Ineffective mark-compacts near heap limit / Allocation failed - JavaScript heap out of memory, climbing to ~2GB before a SIGTRAP. • Persists after: clean reinstall (universal binary), full wipe of ~/Library/Application Support/Claude and caches, and launching natively via arch -arm64.

What Should Happen?

The app should launch and remain open normally, loading the chat interface without crashing. Instead, it crashes ~10–15 seconds after launch every time, with the V8 JavaScript heap growing to ~2GB before an out-of-memory crash (SIGTRAP). This happens from a completely clean state — fresh reinstall of the universal binary, full removal of ~/Library/Application Support/Claude and caches, and even when forced to run natively via arch -arm64. Browser version at claude.ai works fine, so the issue is specific to the desktop app on macOS 26.5.

Error Messages/Logs

Steps to Reproduce

  1. Install Claude desktop v1.9659.2 (universal binary from claude.ai/download) on macOS 26.5 (25F71), MacBook Pro Mac14,7 (Apple M2).     2.    Launch the app from Applications.     3.    Wait ~10–15 seconds.     4.    App crashes with a V8 out-of-memory error (OOM error in V8: Ineffective mark-compacts near heap limit / Allocation failed - JavaScript heap out of memory), SIGTRAP. Crash persists after: full wipe of ~/Library/Application Support/Claude, ~/Library/Caches/Claude, and saved state; clean reinstall; and launching natively via arch -arm64.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

1.9659.2

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

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claude-code - 💡(How to fix) Fix [BUG] claude app crashes seconds after being opened