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msedgedriver: DevToolsActivePort file doesn't exist

Andi 6 Reputation points
2021-11-22T08:32:12.267+00:00

Since version 95 msedgedriver no longer works if it is running under LocalSystem.

OpenQA.Selenium.WebDriverException
unknown error: MSEdge failed to start: was killed. (unknown error: DevToolsActivePort file doesn't exist) (The process started from msedge location C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe is no longer running, so MSEdgeDriver is assuming that MSEdge has crashed.)

The problem does not occur when it runs under applicationpoolidentity.

See also https://stackoverflow.com/questions/69770506/webdriverexception-unknown-error-msedge-failed-to-start-was-killed

Microsoft Edge | Microsoft Edge development
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  1. Anonymous
    2021-11-23T07:42:58.577+00:00

    Hi @Andi

    I can reproduce the issue with Edge version 96.0.1054.29. After investigating, I find that Edge WebDriver can be started normally under LocalSystem account, it's Edge browser which can't be started under LocalSystem account.

    I think that's an issue with Edge version 96.0.1054.29. I suggest that you can provide feedback about this issue to Edge team by pressing Alt+Shift+I in Edge. The Edge team will check the feedback and improve the products continuously. Thanks for your understanding.

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    Regards,
    Yu Zhou

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