After I update Win03SP1 on ISA2K4 SP1 box, there are error message in the system log every 15 min. indicating: Source: DCOM User: NT AUTHORITY\NETWORK SERVICE The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID {BA126AD1-2166-11D1-B1D0-00805FC1270E} to the user NT AUTHORITY\NETWORK SERVICE SID (S-1-5-20). This security permission can be modified using the Component Services administrative tool. I know I can provide permission to "Netman" however I want to know 1) Reason for such a message if possible after update into Win03SP1 Is that because of ISA's VPN connection? 2) If it is no problem to give permission local activation/access to account of network service in view of security. Thanks, Roy