Can't maximize chrome window using Selenium

Question

I've tried to maximize the window onPreapre by the command below:

browser.driver.manage().window().maximize();

But it doesn't maxmize the window and there's no error on selenium webdriver logs, actually it seems like the execute has been succeed -

Starting ChromeDriver 2.26.436421 (6c1a3ab469ad86fd49c8d97ede4a6b96a49ca5f6) on port 5814
Only local connections are allowed.
17:14:28.898 INFO - Done: [new session: Capabilities [{count=1, browserName=chrome, chromeOptions={args=[--no-sandbox, --test-type, --memory-metrics, --console, --crash-on-failure], prefs={download={directory_upgrade=true, default_directory=./Users/Idan/automation/tests/downloaded/, prompt_for_download=false}}}}]]
17:14:28.909 INFO - Executing: [set script timeout: 90000])
17:14:28.910 INFO - Done: [set script timeout: 90000]
17:14:28.969 INFO - Executing: [maximise window])
17:14:29.236 INFO - Done: [maximise window]
17:14:29.244 INFO - Executing: [maximise window])
17:14:29.250 INFO - Done: [maximise window]

Answer 1

You can try it with start-maximized flag:

capabilities: {
  'browserName': 'chrome',
  'chromeOptions': {
    'args': ['start-maximized']
  }
}

Answer 2

I remember we had a similar issue - what we did is first set the size of the window and then maximize - don't remember exactly why did we apply this workaround, but it works for us:

browser.manage().window().setSize(1400, 900);
browser.manage().window().maximize();

Answer 3

According to your log - you do maximization twice. Maybe the first time it is maximized, and after the second try it is restored down to default size