3304911 - SAP Cloud Connector - An existing connection was forcibly closed by the remote host

Symptom

When using CPI, DWC, SAC, and IBP as frontend systems to connect to the backend system via the Cloud Connector, the connection fails with the following error in the ljs_trace or scc_core.trc files

2023-02-10 09:38:54,119 -0600#ERROR#com.sap.core.connectivity.tunnel.core.handlers.TunnelErrorHandler#notification-client-58-1# #Unexpected problem during tunnel processing in channel [id: 0x747d7319, L:/xx.x.xx.xxx:xxxxx - R:connectivitynotification.cf.us20.hana.ondemand.com/40.91.120.100:443]; Reason: An existing connection was forcibly closed by the remote host.

The connection error occurs between the Cloud Connector and BTP, as the remote server is connectivitynotification.cf.us20.hana.ondemand.com.

Environment

Cloud connector version 2.15 - 2.18.0

Product

SAP Business Application Studio all versions

Keywords

Cloud Connector, forcibly closed, Reset by peer, An existing connection was forcibly closed by the remote host , KBA , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem

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