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2735653 - Connections under "HTTP Connections" folders throw the error "Connect to http://xxxxxx failed:NIEHOST_UNKNOWN(-2)"


Connections under "HTTP Connections to External Server" folder or under "HTTP Connections to ABAP System" throw the error "Connect to http://xxxxxx failed:NIEHOST_UNKNOWN(-2)".

The protocol mentioned can also be "https://".



  • SAP Netweaver ABAP based system
  • ABAP Platform based system


ABAP platform all versions ; SAP NetWeaver all versions


NIEHOST_UNKNOWN(-2), Connect to http failed, HTTP Connections to External Server, Proxy Host, Proxy Service, SM59, Connection, Netweaver , KBA , OPU-GW-COR , Framework , BC-MID-RFC , RFC , BC-CST , Client/Server Technology , Problem

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