In order to feed an Excel file with real time data from MultiCharts you should use an RTD Server on this PC. Please see the instructions below:
# Download the RTD Server installercorresponding to your version of MultiCharts:
#* [https://dl.dropboxusercontent.com/u/27918922/Wiki/RTD_Server_8_8_lower.zip | RTD Server for MultiCharts 8.8 and lower];
#* [https://dl.dropboxusercontent.com/u/27918922/Wiki/RTD_Server_9_0_higher.zip | RTD Server for MultiCharts 9.0 and higher];