title: "NoSuchWindowException: no such window: window was already closed" while switching tabs using Selenium and WebDriver through Python3
body: <p>I have a form that opens in a new tab when I click on it. When I try to navigate to that new tab, I keep getting a NoSuchWindowException. Code is pretty straightforward. 'myframe' is the frame within the new tab that the information will eventually get plugged into. Should I be waiting for something else?</p>
  
  <pre><code>from selenium import webdriver
  from selenium.webdriver.support import expected_conditions as EC
  from selenium.webdriver.support.ui import WebDriverWait, Select
  from selenium.webdriver.common.by import By
  from selenium.common.exceptions import TimeoutException, NoSuchElementException
  import time
  import pandas as pd
  
  url = *****
  driver = webdriver.Chrome(executable_path = r'S:\Engineering\Jake\MasterControl Completing Pipette CalPM Forms\chromedriver')
  driver.get(url)
  
  wait = WebDriverWait(driver, 5)    
  
  window_before = driver.window_handles[0]
  driver.find_element_by_id('portal.scheduling.prepopulate').click()
  window_after = driver.window_handles[1]
  driver.switch_to_window(window_after)
  driver.switch_to_default_content()
  wait.until(EC.frame_to_be_available_and_switch_to_it('myframe'))
  </code></pre>
  
  <hr>
  
  <pre><code>Traceback (most recent call last):
  
    File "&lt;ipython-input-308-2aa72eeedd51&gt;", line 1, in &lt;module&gt;
      runfile('S:/Engineering/Jake/MasterControl Completing Pipette CalPM Forms/Pipette Completing CalPM Tasks.py', wdir='S:/Engineering/Jake/MasterControl Completing Pipette CalPM Forms')
  
    File "C:\ProgramData\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 678, in runfile
      execfile(filename, namespace)
  
    File "C:\ProgramData\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 106, in execfile
      exec(compile(f.read(), filename, 'exec'), namespace)
  
    File "S:/Engineering/Jake/MasterControl Completing Pipette CalPM Forms/Pipette Completing CalPM Tasks.py", line 150, in &lt;module&gt;
      create_new_cal_task(asset_number)
  
    File "S:/Engineering/Jake/MasterControl Completing Pipette CalPM Forms/Pipette Completing CalPM Tasks.py", line 130, in create_new_cal_task
      driver.switch_to_default_content()
  
    File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 783, in switch_to_default_content
      self._switch_to.default_content()
  
    File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\remote\switch_to.py", line 65, in default_content
      self._driver.execute(Command.SWITCH_TO_FRAME, {'id': None})
  
    File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 314, in execute
      self.error_handler.check_response(response)
  
    File "C:\ProgramData\Anaconda3\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
      raise exception_class(message, screen, stacktrace)
  
  NoSuchWindowException: no such window: window was already closed
    (Session info: chrome=68.0.3440.106)
    (Driver info: chromedriver=2.40.565498 (ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=Windows NT 6.1.7601 SP1 x86_64)
  </code></pre>