Connection closed by client nsClientUI_s1

Question

I’m trying to determine what caused the following chain of actions:

2024/11/04 16:00:22.638 stAgentSvc p14d8 tcc0 error NSCom2.cpp:1038 NSCOM2 recv failed 10054
2024/11/04 16:00:22.638 stAgentSvc p14d8 tcc0 error NSCom2.cpp:783 NSCOM2 startServerMessagePump: Connection closed by client nsClientUI_s1

Then further down in the logs I’m seeing:

2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info config.cpp:10145 Config osessId 1] Marking user config for delete
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info npaTunnelMgr.cpp:933 CNpaTunnelMgr Handle session change for NPA active session 1, log off session 1
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info npaTunnelMgr.cpp:608 CNpaTunnelMgr Set NPA (desired) status from NPA_TO_STOP] to PNPA_TO_STOP]
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info tunnelMgr.cpp:1695 CTunnelMgr Disconnecting tunnel for sessId 1
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info tunnel.cpp:288 nsTunnel TLS disconnecting nsTunnel, context = NSTUNNEL_DISCONNECTED
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info nsssl.cpp:681 nsssl nsssl_disconnect enter
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info nsssl.cpp:1146 nsssl TLS SSL shutdown
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info nsssl.cpp:1170 nsssl TLS Exit SSL shutdown
2024/11/04 16:00:34.177 stAgentSvc p14d8 t14dc info nsssl.cpp:1612 nsssl TLS Closing sock 1488
2024/11/04 16:00:34.177 stAgentSvc p14d8 t75c info config.cpp:6395 Config osessId 1] Deleting user config
2024/11/04 16:00:34.177 stAgentSvc p14d8 t3e0c info nsssl.cpp:1916 nsssl on socket close for socket 1488
2024/11/04 16:00:34.177 stAgentSvc p14d8 t3e0c info tunnel.cpp:338 nsTunnel TLS received nsssl_closed, tunnel destroyed
2024/11/04 16:00:34.177 stAgentSvc p14d8 t3e0c info nsssl.cpp:706 nsssl TLS Cleanup SSL

Any ideas what caused this?

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Hi Max,

The first line gives a does give a clue.

2024/11/04 16:00:22.638 stAgentSvc p14d8 tcc0 error NSCom2.cpp:1038 NSCOM2 recv failed 10054

“10054” is actually a microsoft error code . You will find the definition of the error code under the link:

https://learn.microsoft.com/en-us/windows/win32/debug/system-error-codes--9000-11999-

The code states “An existing connection was forcibly closed by the remote host.”.

Are you seeing this issue frequently ? Its possible that a security software installed in the machine or a network firewall is resetting or closing the connection.

Reply

ARJUNDAS · Answer

Hi Max,The first line gives a does give a clue.2024/11/04 16:00:22.638 stAgentSvc p14d8 tcc0 error NSCom2.cpp:1038 NSCOM2 recv failed 10054“10054” is actually a microsoft error code . You will find the definition of the error code under the link:https://learn.microsoft.com/en-us/windows/win32/debug/system-error-codes--9000-11999-The code states “An existing connection was forcibly closed by the remote host.”.Are you seeing this issue frequently ? Its possible that a security software installed in the machine or a network firewall is resetting or closing the connection.

Reply

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