Claude Code background agents crash-loop after macOS sleep/wake

What this error means

background sessions disappearing and daemon reconnect failing after macOS sleep/wake is a Claude Code failure pattern reported for developers trying to fix claude code background agents crash-looping after mac sleep/wake cycle, daemon not detecting clock jumps. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Claude Code changelog v2.1.142 fixed: background sessions disappearing and daemon reconnect failing after macOS sleep/wake — the daemon now detects clock jumps instead of treating them as elapsed idle time. Also fixed daemon not exiting cleanly after binary upgrade causing crash-loop. Category: Claude Code background/daemon errors → AI Coding Tools.

Common causes

• Claude Code changelog v2.1.142 fixed: background sessions disappearing and daemon reconnect failing after macOS sleep/wake — the daemon now detects clock jumps instead of treating them as elapsed idle time. Also fixed daemon not exiting cleanly after binary upgrade causing crash-loop. Category: Claude Code background/daemon errors → AI Coding Tools.

Quick fixes

1. Confirm the exact error signature matches background sessions disappearing and daemon reconnect failing after macOS sleep/wake.
2. Check the Claude Code account, local tool state, and provider configuration involved in the failing workflow.
3. Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

• Verify the command, editor, extension, or API client that produced the error.
• Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
• Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

1. Capture the exact error message and the command, editor action, or request that triggered it.
2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
3. Review the source evidence below and compare it with your environment.
4. Apply one change at a time and rerun the smallest failing action.
5. Keep the working fix documented for the team or deployment environment.

How to prevent it

• Keep provider/tool configuration documented.
• Record non-secret diagnostics such as tool version, provider name, model name, and command path.
• Add a lightweight check before CI or production workflows depend on the tool.

Sources checked

• https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md

Evidence note: Claude Code changelog v2.1.142 fixed: background sessions disappearing and daemon reconnect failing after macOS sleep/wake — the daemon now detects clock jumps instead of treating them as elapsed idle time. Also fixed daemon not exiting cleanly after binary upgrade causing crash-loop. Category: Claude Code background/daemon errors → AI Coding Tools.

Related errors

• AI Coding Tools

FAQ

What should I check first?

Start with the exact background sessions disappearing and daemon reconnect failing after macOS sleep/wake text and the smallest action that reproduces it.

Can I ignore this error?

No. Treat it as a failed Claude Code workflow until the root cause is understood.

Is this guaranteed to have one fix?

No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.

How do I know the fix worked?

Rerun the same command, editor action, or request. The fix is working when that action completes without background sessions disappearing and daemon reconnect failing after macOS sleep/wake.