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“Headless Chrome terminated” describes what you observed, not why it happened. First determine whether Chrome exited or crashed, ChromeDriver failed, or an automation harness or CI runner ended the process or session. Preserve the exact browser and driver binaries, versions, launch arguments, operating system, and run context before changing anything; those details make the failure diagnosable.
Identify which process ended
Chrome, ChromeDriver, and the automation harness are separate layers with different failure modes. A ChromeDriver crash is not the same as Chrome crashing or closing, as the ChromeDriver crash guidance cautions.
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- Chrome fails when launched directly: investigate the browser binary and runtime environment.
- Chrome works directly but fails when WebDriver starts it: compare driver startup, the selected binary, arguments, and session configuration.
- The browser works in a shell but not in CI or a service: compare the environment and process owner, as well as the executable and arguments.
- Chrome remains running but the test ends: investigate the driver session or harness rather than assuming a browser crash.
The official startup guidance recommends testing the same Chrome binary from an ordinary command prompt, then trying to launch it directly from the test without WebDriver or ChromeDriver. Check the browser path recorded in the ChromeDriver log.
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Record the configuration from the failed run, not just what you expect the test to use. Keep a copy of the original logs and settings before changing flags.
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- Operating system and, if applicable, container image or CI runner.
- Chrome and ChromeDriver versions and full executable paths.
- Whether the browser is modern Headless Chrome or the standalone
chrome-headless-shell. - Every launch argument and the automation library or test harness.
- The user identity, environment, and whether the run is local, in CI, or under a service manager.
From milestone M115, ChromeDriver documents channel-specific Chrome and ChromeDriver releases through Chrome for Testing. Use the actual paths and versions reported by the failing run when checking compatibility, not just the versions installed on a developer machine. See the ChromeDriver version-selection guidance.
Collect ChromeDriver and Chrome logs separately
Enable ChromeDriver verbose logging
When you control the ChromeDriver service command, start it with verbose logging and a file path:
chromedriver --verbose --log-path=chromedriver.logIf your client library starts ChromeDriver for you, use its service or logging options to pass the equivalent arguments. Consult that library’s documentation for the exact configuration; the option may not belong in Chrome’s browser arguments.
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Capture Chrome standard error
Chrome’s own stderr is a separate artifact. Set CHROME_LOG_FILE in the environment inherited by ChromeDriver before launching the test:
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CHROME_LOG_FILE=/absolute/path/chrome-stderr.logOn Windows, set the variable in the shell or service environment that launches the test. The ChromeDriver guide documents platform differences: in its described launch setup, --log-path captures Chrome stderr on Linux and macOS but not Windows. CHROME_LOG_FILE is the documented cross-platform approach for saving Chrome stderr, with Android as an exception. Do not assume a driver log contains all browser output.
Check for a recorded crash
If Chrome is still accessible, open chrome://crashes and look for a report matching the failure time. Crashpad stores crash data relative to the browser’s User Data Directory. The Chromium documentation names the relevant directories Crashpad on Windows and macOS, and Crash Reports on Linux; see Chromium’s Crashpad documentation.
A minidump may contain exception state, call stacks, stack memory, and loaded modules, while report metadata can include Chrome and OS versions. It can help establish that a crash was recorded, but interpret it alongside the logs and process exit information. No visible report does not, by itself, establish why Chrome stopped—or prove that it did not crash.
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If Chrome fails immediately under Linux automation, check whether it is running as root and whether the test service has the expected user environment. Chrome’s official startup guide identifies root execution as a common cause of startup crashes and recommends running as a regular user.
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Do not treat --no-sandbox as a routine fix. Chrome’s guidance says that this workaround is unsupported and highly discouraged. If Chrome starts in an ordinary shell but not under a service or CI runner, compare the user identity, environment, binary, launch arguments, and installation context rather than weakening browser security.
Confirm which Headless Chrome you are running
“Headless” does not identify one implementation across all Chrome versions. Chrome 112 introduced the updated Headless mode, which runs Chrome without displaying platform windows. From Chrome 132, the former Headless implementation is available only as the separate chrome-headless-shell binary. See Google’s Headless Chrome documentation.
| Choice | What the official documentation says | When to consider it |
|---|---|---|
| Modern Headless Chrome | The full Chrome implementation runs with platform windows undisplayed. | When fidelity to full Chrome matters, including high-accuracy end-to-end or extension testing. |
chrome-headless-shell |
The standalone shell is lighter and omits dependencies such as X11/Wayland and D-Bus. The official guide says standalone binaries have been available through Chrome for Testing since Chrome 120. | When its reduced dependencies suit the target environment and its feature coverage meets the test’s needs. |
Before attributing a termination to Headless mode generally, verify the executable path and Chrome release. The two implementations differ in dependencies and fidelity; choose based on the test’s requirements, not on an assumption that all headless exits share one cause. See the Chrome Headless shell guide.
Build a useful bug report
If the failure reproduces outside a specialized harness or remains after checking the setup, include enough detail for someone else to reproduce it:
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- A minimal reproducible test and the exact command or launch arguments.
- Chrome and ChromeDriver versions and executable paths.
- Operating system, container or runner details, and user identity.
- The automation client and whether the failure occurs in a shell, direct test launch, or full harness.
- Verbose ChromeDriver log, Chrome stderr, process exit information, and any crash-report ID or minidump.
ChromeDriver’s crash guidance notes that debugging a ChromeDriver crash dump on Windows requires a debug build; an official debug release is not provided. Keep this distinction in mind when deciding what artifacts can be obtained.
Or skip the browser setup
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Frequently Asked Questions
Does a missing entry in chrome://crashes prove Chrome did not crash?
No. A missing report does not establish the failure mechanism; use logs and process exit information as well.
Can ChromeDriver’s verbose log replace Chrome stderr?
No. They are separate artifacts, and ChromeDriver’s –log-path behavior for Chrome stderr varies by platform.
Quick Recap
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problems
