Hi Hi, This problem how to solve? MPI info: 4 processors are found from DEF_MPIenv.DAT Error: Cannot obtain value of env variable : DEF_CFG_DIR Error while connecting to host, No connection could be made because the target machine actively refused it. (10061) Connect on sock (host=DESKTOP-ANK6R3Q, port=8676) failed, exhaused all end points Unable to connect to 'DESKTOP-ANK6R3Q:8676', sock error: Error = -1