Error -27794: Failed to connect to server

Hi,

I am using Oracle NCA +Web multi  protocol to record the script for Oracle R12 application.  I am getting below error when i replay script. 

vuser_init.c(16): Error -27794: Failed to connect to server "url:80": [10061] Connection refused [MsgId: MERR-27794]
vuser_init.c(16): Warning -26200: At least one of the resources specified by EXTRARES has not been downloaded due to the above error(s) [MsgId: MWAR-26200]

Could you please suggest the possiable solution for this?

Regards,

Gowtham