InvalidOperationException in System.ServiceModel.dll using Visual Studio 2015 with C++, GoogleTest Framework and Google Test Adapter

Question

I'm using Visual Studio 2015 with the GoogleTest Framework and the Google Test Adapter to test some C++ Code. Here is my code

main.cpp

#include "gtest/gtest-spi.h"

int main( int ac, char* av[] )
{
    testing::InitGoogleTest( &ac, av );
    return RUN_ALL_TESTS();
}

TEST( Dummy_General, NumberComparison )
{
    EXPECT_EQ( 10.0, 10.0 );
    EXPECT_GT( 5, 2 );
    EXPECT_LT( 4, 6 );
}

When I run the test everything works as expected, but while debugging I get the following exception without even reaching the main function:

Exception thrown: 'System.InvalidOperationException' in System.ServiceModel.dll

Additional information: The communication object, System.ServiceModel.Channels.WindowsStreamSecurityUpgradeProvider, is in the Opening state. Communication objects cannot be used for communication unless they are in the Opened state.

Later I also get:

Exception thrown: 'System.IO.FileNotFoundException' in mscorlib.dll

Exception thrown: 'System.IO.FileNotFoundException' in Microsoft.PythonTools.VSInterpreters.dll

Between lots of:

Exception thrown at 0x00007FF899DD1F28 in vstest.executionengine.exe: Microsoft C++ exception: EEFileLoadException at memory location 0x000000096EBFC0B0.

Exception thrown at 0x00007FF899DD1F28 in vstest.executionengine.exe: Microsoft C++ exception: [rethrow] at memory location 0x0000000000000000.

Exception thrown at 0x00007FF899DD1F28 in vstest.executionengine.exe: Microsoft C++ exception: EEFileLoadException at memory location 0x000000096EBFC0B0.

Exception thrown at 0x00007FF899DD1F28 in vstest.executionengine.exe: Microsoft C++ exception: EEFileLoadException at memory location 0x000000096EBFC0B0.

Exception thrown at 0x00007FF899DD1F28 in vstest.executionengine.exe: Microsoft C++ exception: [rethrow] at memory location 0x0000000000000000.

I searched for this error without getting an answer. Might there be a bug in the Google Test Adapter?

Thanks

Marcel