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Topic starter
One of our customer having an issue whereby, the HDS stop working.
PcVue 11.2 Build 6081.
This was a working project and suddenly having this issue.
Even though restarted or reinstall PcVue several times, the problem is still there.
The weird issue was, when HDS start, it can't connect to PcVue OPC Server, even with a new project.
But with the OPC Client can connect.
InitOpc __ Error to connect on OPC Server 'SV.OPCDAServer'
StartExploit __ Init Opc failed, so StopExploitation
Anyone face this issue recently.
Posted : 27/08/2019 5:27 pm
Hello,
I found something interesting in the customer's traces :
COPCAccess::Connect __ CoCreateInstanceEx Error with CLSID_OPCServerList (8000401A=CO_E_RUNAS_LOGON_FAILURE)
The error code in red is documented as such :
// The server process could not be started because the configured identity is incorrect. Check the username and password.
//
#define CO_E_RUNAS_LOGON_FAILURE _HRESULT_TYPEDEF_(0x8000401AL)
I found in the Microsoft website this blog post that explains the issue better :
https://blogs.msdn.microsoft.com/dsnotes/2014/09/25/com-client-failing-with-error-8000401a/
Quoting the article :
"The best possible ways to resolve this is by:
(I) Change the identity of the DCOM server from “The Interactive User” to “This User” and then specify that the DCOM server runs as admin or some other domain or local user account.
(II) Make sure that someone is physically logged onto the machine or that you continuously have a remote desktop session open."
Posted : 11/09/2019 2:14 pm
My bad...I forgot to come back to this topic to say the customer fixed the issue by applying the solution 1
Thanks Kevin
Posted : 17/10/2019 8:47 am