First check if any recent Windows /security patch updates, if yes then rollback those or get further version of pega robotics.

Try once the below option:

Tools -> Options -> Pega Robotics -> Studio Diagnotics -> turn off output publisher.

Hi,

Thanks for your help. I have I already tried that option of Output publisher, and I also tried with Version change of Pega Robotics Studio, But none of them are working for me.

I think Pega Robotics Studio has made to irritate developer by giving such an extraordinary issues which could not be solved by anyone. I am stuck very badly on this issue. It's so irritating that even Pega Support guys are also not able to solve it on one go.