Claude Chrome Extension Associated with Renderer Crashes

Summary

Chrome renderer process crashes appear to be correlated with the Claude browser extension. All 4 recent crashes (January 28, 2026) contain the Claude extension ID in the crash dump, while 8 older crashes (December 2025) do not.

Note: Filing here as there's no dedicated repo for the Chrome extension. The extension integrates with Claude Desktop via native messaging.

Environment

• macOS Version: 26.2.0 (Darwin 25.2.0)
• Chrome Version: 144.0.7559.97
• Claude Extension Version: 1.0.38
• Extension ID: fcoeoabgfenejglbffodgkkbkcdhcgfn
• Claude Desktop Version: 1.1.1200
• Hardware: Apple M3, 24GB RAM

Crash Details

| Timestamp | Uploaded Crash ID | Local Context |
|-----------|-------------------|---------------|
| Jan 28, 8:14:47 PM | f2777fb5ae350125 | fcd5b40c-009a-4205-8f73-c8c5d83eb41d |
| Jan 28, 5:02:43 PM | (not uploaded) | bd19827e-97ef-49ed-b5a7-796de5424775 |
| Jan 28, 5:01:44 PM | (not uploaded) | 2bbb8754-cd01-43f3-a2c5-f1f6e66b04d4 |
| Jan 28, 5:01:41 PM | e17272ee2135e95f | 548c37c0-f452-4b24-bdee-152cdab8c783 |

Crash Analysis

All crashes are Chrome Helper (Renderer) process crashes. Analysis of minidump files shows:

• Claude extension ID present in all 4 January crashes
• Claude extension ID absent from all 8 December crashes
• High renderer client IDs (2592-2970) indicating long Chrome sessions
• Multiple extensions loaded in crashing renderer

Correlation data:

| Crash Date | Claude Extension Present |
|------------|-------------------------|
| Dec 6 | No |
| Dec 11 | No |
| Dec 12 (5 crashes) | No |
| Jan 28 (4 crashes) | Yes - all 4 |

Other extensions present in crashing renderer:

• 1Password (aeblfdkhhhdcdjpifhhbdiojplfjncoa)
• Image downloader - Imageye (agionbommeaifngbhincahgmoflcikhm)
• Tab Activate (jlmadbnpnnolpaljadgakjilggigioaj)

Configuration

• Extension installed in 5 Chrome profiles
• Claude Desktop app v1.1.1200 running with MCP servers
• Native messaging host installed at: ~/Library/Application Support/Google/Chrome/NativeMessagingHosts/com.anthropic.claude_browser_extension.json

Related Log Entries

From ~/Library/Logs/Claude/chrome-native-host.log:

• Normal start/stop cycles observed
• No explicit errors logged
• Clean "Chrome disconnected (EOF received)" shutdowns

From ~/Library/Logs/Claude/main.log (Jan 29, 07:43:36):

• 7 simultaneous desktop_mcp_unexpected_close events logged
• Occurred ~8 minutes after a Chrome crash

Steps to Reproduce

Unable to reproduce on demand. Crashes occur during normal browsing with extension active.

Expected Behavior

Chrome should not crash when the Claude extension is installed and active.

Actual Behavior

Renderer process crashes occurring multiple times per day, all correlated with Claude extension presence.