Error:ICM_HTTP_CONNECTION_FAILED
Solution:
1. Goto Tx: SICF and Select Client from Menu Proxy Setting (Ctrl+F2),

2.In Global Setting Tab:
Provide the below details,
a). Authorization: S_ICF
b). No proxy for the following addresses: *.sap.corp;*.sap-ag.de;*.sap.com;

3.In HTTP Protocol Tab:
Technical Setting : Give Hostname and port number
Logon Data : Give username and password

Click on OK.
4.For Testing Goto Tx. SE38 Run the Program (/IANWM/CHECK_WS),

Click on Execute.
5.Check Result:

Thank you...!