[BUG] Cowork VM boot time

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?

Cowork VM boot time (~4 min) exceeds connection timeout (60s), causing infinite restart loop. Each timeout fires isAppQuit: true, which kills the still-booting VM (another 60s force-kill), then immediately restarts it. UI becomes briefly responsive mid-cycle, causing sessions to be cut off while typing. Affects Apple Silicon Mac, Claude v1.2773.0.

What Should Happen?

Cowork VM boot time (~4 min) exceeds connection timeout (60s), causing infinite restart loop. Each timeout fires isAppQuit: true, which kills the still-booting VM (another 60s force-kill), then immediately restarts it. UI becomes briefly responsive mid-cycle, causing sessions to be cut off while typing. Affects Apple Silicon Mac, Claude v1.2773.0.

Error Messages/Logs

Time	Event
11:50:50	VM starts (new sessiondata.img created)
11:51:50	60s timeout fires — Claude triggers quit cleanup (isAppQuit: true)
11:51:59	You click the dock icon (mid-typing)
11:52:50	VM force-killed after another 60s (won't stop gracefully, still booting)
11:53:04	VM starts again… same cycle repeats

Steps to Reproduce

Cowork VM boot time (~4 min) exceeds connection timeout (60s), causing infinite restart loop. Each timeout fires isAppQuit: true, which kills the still-booting VM (another 60s force-kill), then immediately restarts it. UI becomes briefly responsive mid-cycle, causing sessions to be cut off while typing. Affects Apple Silicon Mac, Claude v1.2773.0.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.2773.0 (884b37) 2026-04-15T14:32:09.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_