Steps to reproduce:

1. On system with all NVDA dependencies installed clone NVDA git repository and run scons source.
2. move to the source directory and type python nvda.pyw
3. Try to read a console window in which NVDA is started.
4. Open another cmd and try to interact with it.

Actual behavior:

Screen reviev keys didn't work and the following is written in the log each time when the console is focused.

ERROR - NVDAObjects.behaviors.LiveText._monitor (14:54:56.263):
Error getting initial lines
Traceback (most recent call last):
  File "NVDAObjects\behaviors.py", line 260, in _monitor
    oldLines = self._getTextLines()
  File "NVDAObjects\window\winConsole.py", line 49, in _getTextLines
    return winConsoleHandler.getConsoleVisibleLines()
  File "winConsoleHandler.py", line 121, in getConsoleVisibleLines
    consoleScreenBufferInfo=wincon.GetConsoleScreenBufferInfo(consoleOutputHandle)
  File "wincon.py", line 70, in GetConsoleScreenBufferInfo
    raise WinError()
WindowsError: [Error 6] Nieprawidłowe dojście. which in polish mean something like the handle is invalid.

Expected behavior:

NVDA should be able to read a console window.

System configuration:

NVDA Installed/portable/running from source:

Running from source

NVDA version:

master commit ec3eeee (HEAD -> master, nvaccess/master

Windows version:

Windows 7 x64

Name and version of other software in use when reproducing the issue:

Python 2.7.15, Visual Studio community 2017

Other information about your system:

None

Other questions:

Does the issue still occur after restarting your PC?

Yes

Have you tried any other versions of NVDA?

No