This is what I have done in "Computer" (DCOMCNFG on server): Do I have to configure x32 ( mmc comexp.msc /32) 圆4 (dcomcnfg) DCOM parameters? (Following instruction would tend to use 32 bits configuration, but it seemsthat the 64 bits configuration is taken into account If Yes, Do you think the problem may come from Configuration or from LIGHTOPC?
Is it possible to connect an OPC server x32 started by "User/Pass" on a winS2012 from a "NT AUTHORITY\ANONYMOUS LOGON" on a Win2K? Note that the same OPC server will be 100% OK with client if the WIN2K is started with a user/pass matching my OPC server user/Pass. (Connection fails with error "CoCreateInstance Failed:RPC Server is unavailable"). This client cannot be changed in any way (cannot create user, or change DCOM configuration).įollowing instructions to configure OPCEnum, DCOM and Computer, I am able to view the OPC server from my client, but not to connect. This OPC Server is accessed by an OPC Client application on a WIN2K(AnonymousLogon). The OPC server is a 32 bits application based on LIGHTOPC (C/C++/GNAT). I am currently porting an OPC Server application from a Win2K(AnonymousLogon) to a WinServer2012 (Login/Pass).
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