Another stack trace while writing value

2024-02-01 09:18:36.168 +11:00 8000000d-0000-f800-b63f-84710c7967bb [Error] JIOVINO (Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController) Error writing value: 1540001 to PLC, TagName Plant.PreClean.Global.ALMADStoPLC_DINT_x.ALMADStoPLC_DINT_02 An OPC operation failure with error ID '{opcfoundation.org/DataAccess/}E_NETWORK_ERROR.0xFFFFFFFF' occurred, originating from 'OpcLabs.EasyOpcClassic' and with depth of 2. The inner exception contains details about the problem.
2024-02-01 09:18:36.168 +11:00 8000000d-0000-f800-b63f-84710c7967bb [Error] JIOVINO (Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController) OPC NET API error - result ID: E_NETWORK_ERROR; Could not connect to server.
+ The client method called (or event/callback invoked) was 'WriteMultipleItemValues[1]'.
2024-02-01 09:18:36.168 +11:00 8000000d-0000-f800-b63f-84710c7967bb [Error] JIOVINO (Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController) CoCreateInstanceEx: Access is denied.

2024-02-01 09:18:36.239 +11:00 8000000d-0000-f800-b63f-84710c7967bb [Error] JIOVINO (Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController) at OpcLabs.EasyOpc.Internal.EasyUtilities.CheckSuccess(OperationResult operationResult)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.WriteItemValue(IEasyDAClient client, DAItemValueArguments itemValueArguments)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.WriteItemValue(IEasyDAClient client, ServerDescriptor serverDescriptor, DAItemDescriptor itemDescriptor, Object value)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.WriteItemValue(IEasyDAClient client, String machineName, String serverClass, String itemId, Object value, VarType dataType)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.WriteItemValue(IEasyDAClient client, String machineName, String serverClass, String itemId, Object value)
at Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController.SetValueToPLC(String tag, Int32 value) in C:\Dev\Repos\ALMADS_Web\Rit.Almads.Web\Areas\Terminals\Controllers\PreCleanerController.cs:line 4300

//InnerException.InnerException.Message
2024-02-01 09:19:06.283 +11:00 8000000d-0000-f800-b63f-84710c7967bb [Error] JIOVINO (Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController) CoCreateInstanceEx: Access is denied.

//StackTrace
2024-02-01 09:19:06.283 +11:00 8000000d-0000-f800-b63f-84710c7967bb [Error] JIOVINO (Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController) at OpcLabs.EasyOpc.Internal.EasyUtilities.CheckSuccess(OperationResult operationResult)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.ReadItemValue(IEasyDAClient client, ServerDescriptor serverDescriptor, DAItemDescriptor itemDescriptor, DAReadParameters readParameters)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.ReadItemValue(IEasyDAClient client, ServerDescriptor serverDescriptor, DAItemDescriptor itemDescriptor)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.ReadItemValue(IEasyDAClient client, String machineName, String serverClass, String itemId, VarType dataType)
at OpcLabs.EasyOpc.DataAccess.IEasyDAClientExtension.ReadItemValue(IEasyDAClient client, String machineName, String serverClass, String itemId)
at Rit.Almads.Web.Areas.Terminals.Controllers.PreCleanerController.ReadValueFromPLC(String tag) in C:\Dev\Repos\ALMADS_Web\Rit.Almads.Web\Areas\Terminals\Controllers\PreCleanerController.cs:line 4323

HI Guys,

I hope you are doing well. We are encountering an issue while writing and reading value from the OPC server. We are using .NET 6 platform to integrate with the OPC server. We can browse servers and find the KepwareEX server but receive following error while reading or writing to a tag. I am using synchronous read (ReadItemValue) and write(WriteItemValue) methods of EasyDAClient class.

An OPC operation failure with error ID '{opcfoundation.org/DataAccess/}E_NETWORK_ERROR.0xFFFFFFFF' occurred, originating from 'OpcLabs.EasyOpcClassic' and with depth of 2. The inner exception contains details about the problem.
OPC NET API error - result ID: E_NETWORK_ERROR; Could not connect to server.

The support on following article specifies to use the latest version and we are using the latest version.
ReadMultipleItems - Failure: OPC NET API error - result ID: E_NETWORK_ERROR; Online Forums - OPC Labs

Please let me know if you need more information. We are running near to a deadline and it would be great if we can resolve this asap.
Could you please help us to resolve the issue or forward this thread to your support team if needed?