Diagnostic Mode (2024)

Chromium (and Google Chrome) comes with a set of built-in diagnostic tests thatany user can run. These tests can help determine the root cause of the followingproblems.

  • Chrome fails to start
  • Chrome crashes quickly after started
  • Chrome starts but any tab created crashes or fails to load
  • Chrome is extremely slow

Work in Progress : Diagnostic mode is currently only available in thetip-of-tree version of Chromium for Windows and in the developer channel versionof Google Chrome for Windows. Furthermore, only a small set of diagnostic testscurrently run (more are planned in the future).

Diagnostic mode is an environment that runs a set of tests before the browserstarts. These tests vary in sophistication, from trivial checks that criticalfiles exist, to more complex (and time consuming) tests that test the integrityof the key databases. Each test can pass, fail or simply be skipped if the testis not applicable. The output should be used as as a starting point for further,more specific, investigation and troubleshooting.

Privacy

Diagnostic mode does not automatically send any information to Google. It is upto the user to copy the text output from running diagnostic mode that theyconsider appropriate and helpful for others to see. Furthermore, care has beentaken to expose little to no personal information in the diagnostic output sothat users can feel comfortable sharing it with internet help groups.

How to run (windows only)

  1. Make sure no instances of chrome.exe are running. Check in theWindows Task Manager for any zombie chrome.exe processes and endthem if necessary.
  2. Open a command line session (cmd.exe)
  3. Change directory (cd) to the directory of chrome.exe, for example,inVista, regular chrome install is in C:\Users\<username>\AppData\Local\Google\Chrome\Application
  4. Type chrome.exe --diagnostics [enter]

A second console window will open and the tests will run automatically, and youshould see something like this:

Diagnostic Mode (1)

This shows a run where all tests passed. If a test fails it will be marked witha [FAIL] entry.

Diagnostic Mode (2024)

FAQs

How do I exit diagnostic mode on my iPhone? ›

Useful Shortcuts: Tapping on some of the options or values in the field test screen can reveal additional information or access hidden menus. Explore these options cautiously. Exiting Diagnostic Mode: Just swipe up from the bottom of the screen to exit diagnostic mode.

How do I get my computer out of diagnostic mode? ›

Press WINDOWS-R on the keyboard to bring up the Run window, enter MSCONFIG and click OK. Under the General tab, click "Normal startup" if it is not selected already.

What is diagnostic mode on a washing machine? ›

Diagnostic modes can help users communicate with their smart washing machine, narrow the problem, and give an idea of what to do next. These tools can be great time-savers when they're effective and informative enough.

What does diagnostic mode mean? ›

Diagnostic mode is an environment that runs a set of tests before the browser starts. These tests vary in sophistication, from trivial checks that critical files exist, to more complex (and time consuming) tests that test the integrity of the key databases.

How do I turn off diagnostics and usage on my iPhone? ›

If you have iOS 10.3 or later, go to Settings > Privacy & Security, scroll down, and tap Analytics or Analytics & Improvements. Then tap Share iPhone & Watch Analytics. If you have iOS 10 to iOS 10.2, go to Settings > Privacy > Diagnostics & Usage and select Automatically Send or Don't Send.

What does diagnostic mode do on iPhone? ›

Available for iPhone and Android, Phone Diagnostics offers a range of tests to check your touch screen, camera, speaker, microphone, Wi-Fi, cellular access, and many other components. Just tap the button for the test you wish to run or tap Start to run all the tests one after the other.

How do I turn off diagnostic data? ›

To turn off data viewing

Go to Start, select Settings > Privacy > Diagnostics & feedback. Under Diagnostic data, turn off the If data viewing is enabled, you can see your diagnostics data option.

How do I disable diagnostic tools? ›

Disable Diagnostic Tools

You may save some resources by disabling the diagnostic tools while debugging if you don't need the provided features. To disable the Diagnostic Tools, start a debugging session, select Tools > Options > Debugging > General, and then deselect the Enable Diagnostic Tools while debugging option.

How do I get out of scan mode? ›

Scan mode basics

To turn scan mode on and off, press Narrator + Spacebar. Tip: The Narrator key is a modifier key in the Narrator commands.

How do I clear my Whirlpool error code? ›

To remove the code, press pause or cancel button twice and the power button once. If the code is still displayed, unplug the washer or disconnect the power for one minute.

How do I clear diagnostic codes? ›

Plug an OBD-II scanner into your vehicle's OBD port and reset it to clear the check engine light. Disconnecting and reconnecting your battery will restart your vehicle's computer and clear the light. Drive an older vehicle around for a few days after repairs. The light will go off on its own once the computer resets.

How do I get my iPhone back to normal? ›

Go to Settings > General > Transfer or Reset iPhone > Reset. WARNING: If you choose the Erase All Content and Settings option, all of your content is removed.

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