[BUG] Claude Desktop 1.7196.0 — EXC_BREAKPOINT crash in Electron Framework on macOS Tahoe 26.3 (M1)

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?

Claude Desktop 1.7196.0 — EXC_BREAKPOINT crash in Electron Framework on macOS Tahoe 26.3 (M1)
Details:

Claude Desktop version: 1.7196.0
Hardware: M1 MacBook Pro, ARM64
macOS: Tahoe 26.3 (25D125)
Repro: app launches normally, crashes ~50 seconds after first message sent in a Claude Code (Cowork) session. Chat tab does not trigger it.

Crash signature (extracted from Crashpad minidump):

Exception: EXC_BREAKPOINT (0x6), code 0xa, subcode 0x5600001
Crashing module: Electron Framework, offset 0x562f60c
Faulting address: 0x11c84760c
Crashing thread: 50873

Likely related issues: #29625, #47644, #48276
Troubleshooting already attempted (none resolved):

Reinstall and macOS restart
Full cache clear: ~/Library/Application Support/Claude, ~/Library/Caches/Claude
Pre-created ~/Library/Logs/Claude with chmod 755 + chown
tccutil reset SystemPolicyAllFiles com.anthropic.claudefordesktop
Keychain Safe Storage delete
--disable-gpu flag (rejected by app: "GPU access not allowed")

What Should Happen?

macOS Tahoe 26.3 made changes to system APIs that Electron's bundled version in Claude Desktop doesn't handle correctly. Anthropic needs to ship a Claude Desktop build with a newer Electron release that's compatible with Tahoe. Until then, there is no fix on your side — you've done everything possible.

Error Messages/Logs

Steps to Reproduce

Environment:

• Hardware: MacBook Pro, Apple M1, ARM64, 10-core CPU
• macOS: Tahoe 26.3 (build 25D125)
• Claude Desktop: 1.7196.0
• Claude Code component: 2.1.138 (bundled)

Steps to reproduce (100% reliable on my machine):

1. Launch Claude.app
2. Wait for the app to fully initialise (~5-10 seconds)
3. Click the Claude Code (</> ) tab
4. Open or create a session with cwd=/Users/<me>/Claude (any directory)
5. Send any short message in the Code session
6. App crashes silently ~30-50 seconds after the message is sent

Reproducibility: 4 out of 4 launches in the captured log (main.log shows
launches at 13:34:04, 13:35:13, 13:38:48, 13:40:24 — each terminated by
a Crashpad-captured EXC_BREAKPOINT).

Crash signature: EXC_BREAKPOINT (0x6), code 0xa, subcode 0x5600001,
in Electron Framework at offset 0x562f60c.

Chat tab alone (without touching Code/Cowork) — please verify if this
also crashes; in my testing the crash is triggered by Code/Cowork
component initialisation.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Code component: 2.1.138 (bundled)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_