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Showing content from https://github.com/microsoft/playwright/issues/36292 below:

`msedge` refuses to start when started with `--remote-debugging-pipe` · Issue #36292 · microsoft/playwright · GitHub

1.52.0

1. defineConfig with a project: { name: "msedge", use: { ...devices["Desktop Edge"], channel: "msedge" } }
2. Run the test(s)

The tests run.

msedge.exe refuses to start.

Command playwright tried to run (cmd.exe-ified for repro):

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --disable-field-trial-config --disable-background-networking --disable-background-timer-throttling --disable-backgrounding-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-background-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DeferRendererTasksAfterInput,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-backgrounding --force-color-profile=srgb --metrics-recording-only --no-first-run --enable-automation --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --no-sandbox "--user-data-dir=%Temp%\playwright_chromiumdev_profile-JXfNA6" --remote-debugging-pipe --no-startup-window

If I run this command without --remote-debugging-pipe, msedge.exe appears in the Task Manager and without --no-startup-window I get the GUI to show as well.

When it fails to open, no logs are generated and the exit code is 0, indicating that nothing went wrong.

Output of a test with DEBUG=pw:browser npx playwright test:

[msedge] › tests_playwright\tests\Bars.spec.ts:316:5 › Bars (bitmap check) › Analytics bar
  pw:browser <launching> C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe --disable-field-trial-config --disable-background-networking --disable-background-timer-throttling --disable-backgrounding-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-background-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DeferRendererTasksAfterInput,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-backgrounding --force-color-profile=srgb --metrics-recording-only --no-first-run --enable-automation --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --no-sandbox --remote-debugging-io-pipes=3,4 --user-data-dir=Temp\playwright_chromiumdev_profile-aXHo4Y --remote-debugging-pipe --no-startup-window +0ms
  pw:browser <launched> pid=13144 +10ms
  pw:browser [pid=13144] <gracefully close start> +22ms
  pw:browser [pid=13144] <kill> +0ms
  pw:browser [pid=13144] <will force kill> +0ms
  pw:browser [pid=13144] taskkill stderr: ERROR: The process "13144" not found.
  pw:browser  +114ms
  pw:browser [pid=13144] <process did exit: exitCode=0, signal=null> +1ms
  pw:browser [pid=13144] starting temporary directories cleanup +0ms
  pw:browser [pid=13144] finished temporary directories cleanup +558ms
  pw:browser [pid=13144] <gracefully close end> +0ms
  1) [msedge] › tests_playwright\tests\Bars.spec.ts:316:5 › Bars (bitmap check) › Analytics bar ────

    Error: browserType.launch: Target page, context or browser has been closed
    Browser logs:

    <launching> C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe --disable-field-trial-config --disable-background-networking --disable-background-timer-throttling --disable-backgrounding-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-background-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DeferRendererTasksAfterInput,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-backgrounding --force-color-profile=srgb --metrics-recording-only --no-first-run --enable-automation --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --no-sandbox --remote-debugging-io-pipes=3,4 --user-data-dir=Temp\playwright_chromiumdev_profile-aXHo4Y --remote-debugging-pipe --no-startup-window
    <launched> pid=13144
    Call log:
      - <launching> C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe --disable-field-trial-config --disable-background-networking --disable-background-timer-throttling --disable-backgrounding-occluded-windows --disable-back-forward-cache --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-background-pages --disable-component-update --no-default-browser-check --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=AcceptCHFrame,AutoExpandDetailsElement,AvoidUnnecessaryBeforeUnloadCheckSync,CertificateTransparencyComponentUpdater,DeferRendererTasksAfterInput,DestroyProfileOnBrowserClose,DialMediaRouteProvider,ExtensionManifestV2Disabled,GlobalMediaControls,HttpsUpgrades,ImprovedCookieControls,LazyFrameLoading,LensOverlay,MediaRouter,PaintHolding,ThirdPartyStoragePartitioning,Translate --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-backgrounding --force-color-profile=srgb --metrics-recording-only --no-first-run --enable-automation --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --disable-search-engine-choice-screen --unsafely-disable-devtools-self-xss-warnings --no-sandbox --remote-debugging-io-pipes=3,4 --user-data-dir=Temp\playwright_chromiumdev_profile-aXHo4Y --remote-debugging-pipe --no-startup-window
      - <launched> pid=13144


    Error Context: test-results\Bars-Bars-bitmap-check-Analytics-bar-msedge\error-context.md

RemoteDebuggingAllowed doesn't appear to be configured, but I put in a ticket to enable it. The docs say that it should work regardless.

If I change --remote-debugging-pipe to --remote-debugging-port=0 manually, then the browser also starts, but I didn't find good documentation on how to make that work with a config file and npx playwright test.

System:
    OS: Windows 11 10.0.22631
    CPU: (16) x64 Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
    Memory: 44.68 GB / 63.62 GB
  Binaries:
    Node: 24.2.0 - C:\Program Files\nodejs\node.EXE
    npm: 11.1.0 - C:\Program Files\nodejs\npm.CMD
  IDEs:
    VSCode: 1.100.3 - C:\Program Files\Microsoft VS Code\bin\code.CMD
  Languages:
    Bash: 5.2.21 - C:\Windows\system32\bash.EXE
  npmPackages:
    @playwright/test: ^1.52.0 => 1.52.0

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