Hi, Did you try registering a valid Windows username/password with mpiexec (mpiexec -register)? Regards, Jayesh ----- Original Message ----- From: "pooja dubey" <[email protected]> To: [email protected] Sent: Tuesday, February 26, 2013 12:13:32 PM Subject: [mpich-discuss] PROBLEM IN MPI CODE EXECUTION whenever i try to execute a code, i shows the following error- Credentials for NISHA rejected connecting to nisha Aborting: Unable to connect to nisha please tell me how can i execute the code to see output. _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss