in quality tab show bad(not connected)
Please observe that a 3-rd party OPC Client can either connect to :
I would suggest to use the later, its accessible on all nodes, out-proc, and runs in separate memory space.
If you use the first option it may have impact on system performance.
Moreover if you are running AC800Connect, you might have to change Controller config.
In your case, you have to figure out Security-issues as well (DCOM and 800xA). Could be a matter of user accounts and their rights (in Windows and in the 800xA system).
The browser function is run by the OPCEnum service (usually run by LocalService), but planning access to the system is a different issue.