Opc.Ua.ServiceResultException|OPC UA Standard|Forum|OPC Foundation

Hi everyone,

 I am working on the OPC Client and I have created to client that can connect to reference server and read the value at the node that I have created.Then I wanted to create dynamic variable for displaying the data changes by subscribing to my node.

 However, I wasn't able to manage that and I have received several exception like the 

'Quickstarts.ReferenceServer.exe' (CLR v4.0.30319: Quickstarts.ReferenceServer.exe): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Net.Http\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Net.Http.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.

9212 - 9/11/17 15:01:57.284 Token #0 created. CreatedAt = 13:01:57.283 . Lifetime = 3600000

9212 - 9/11/17 15:01:57.391 SECURE CHANNEL CREATED [TcpClientChannel UA-TCP 1.03.342.0] [ID=196] Connected To: opc.tcp://localhost:4840/ [None/None/Binary]

9212 - 9/11/17 15:01:57.420 Token #1 activated. CreatedAt = 13:01:57.283 . Lifetime = 3600000

Exception thrown: 'Opc.Ua.ServiceResultException' in Opc.Ua.Core.dll

9212 - 9/11/17 15:01:57.695 TCPCLIENTCHANNEL SOCKET CLOSED: 00000724, ChannelId=196

9212 - 9/11/17 15:01:57.731 Token #0 created. CreatedAt = 13:01:57.731 . Lifetime = 3600000

Exception thrown: 'Opc.Ua.ServiceResultException' in Opc.Ua.Core.dll

9212 - 9/11/17 15:01:57.980 SECURE CHANNEL CREATED [TcpClientChannel UA-TCP 1.03.342.0] [ID=197] Connected To: opc.tcp://localhost:4840/ [SignAndEncrypt/Basic128Rsa15/Binary] Client Certificate: [CN=Quickstart Reference Server, DC=AYBARSKIZIL9377] [6BFBF9DC9BC44C782EE3C33BBFA310C3565C16B4] Server Certificate: [DC=AYBARSKIZIL9377, CN=UA Local Discovery Server, C=US, S=Arizona, L="16101 N. 82nd Street, Scottsdale", O=OPC Foundation] [3D75EDCFC3AAC909E423DE10484D4C6E317E4088]

9212 - 9/11/17 15:01:57.996 Token #1 activated. CreatedAt = 13:01:57.731 . Lifetime = 3600000

9212 - 9/11/17 15:01:58.082 TCPCLIENTCHANNEL SOCKET CLOSED: 00000724, ChannelId=197

Exception thrown: 'Opc.Ua.ServiceResultException' in Opc.Ua.Core.dll

9212 - 9/11/17 15:01:58.128 Register server succeeded. Registering again in 30000 ms

 Do you have any idea how to fix it ?

Best Regards