Bluescreen when using serial communication

Hello

I do have a Problem with windows bluescreens when using serial communication on 2 different COM Ports

I am on Matlab R2019a and Windows 10.

I use a USB to 2xRS232 converter from FTDI for the serial communication ( FT2232H )

I use this code

function serialtest
f=instrfind;
if ~isempty(f)
    fclose(f);
end
Terminator={'CR','CR/LF'};
SERIAL_MOTOR=serial('COM7','BaudRate',9600,'Terminator',Terminator);

SERIAL_MESSUNG=serial('COM6','BaudRate',9600,'Timeout',0.1);


Char_string='somestring';
fopen(SERIAL_MOTOR);
for i=1:1000
    disp(i);
    fprintf(SERIAL_MOTOR,"someotherstring");
    
    SollV=fscanf(SERIAL_MOTOR,'%i');

    if mod(i,100)==0
        fopen(SERIAL_MESSUNG);
        fprintf(SERIAL_MESSUNG,Char_string);
        EmpfangenerString=fscanf(SERIAL_MESSUNG,'%c',10)
        fclose(SERIAL_MESSUNG);

    end
    
end
end

Sometimes the code triggers a Bluescreen on the fopen(SERIAL_MESSUNG).

But i can not reproduce it maybe 1 in 20 times of running this code the bluescreen occours. Does anybody have any clue wht could be the culprint of this error.

I already reinstalled Matlab, Windows 10 and all kind of drivers, including the newest driver from FTDI. I also had the Mainboard of my Notebook changed.

My only guess is, that the driver from FTDI is not very up to date, because it was last updatet 2017.

Any help is appriciated

[Abhay Sengar]

Can you please share error messge/stop code and crash dump you are getting?

[Abhay Sengar]

Also,Can you please tell which hardware are you using?