This article explains below Live Score SOAP error (from Statsoft event logs):

WebSTATISTICA EventID: 0x00000007 (7) - The client closed the connection before submitting a complete request.
This is likely an indication of a network scanner or similar application probing the port.
Setup the scanner to bypass WebSTATISTICA service port, block the service port for external traffic (if you are only using the web browser-based interface) or use RestrictSOAPClientIP administrative parameter.
Source: CSOAPWorker
Thread::HandleSOAPRequest
Reporting level: 1

Windows

1. The traffic of SOAP requests sent to Statistica Live score service (WebStatistica) may have triggered the network security port scanning configured in the server. 
Once received such error, user is suggested to check if they have any network scanning software/tool that is doing security port scanning regularly in the Live score server. (Note: user may check Windows Application Event log for any security scanning events)
To avoid this error, user is recommended to create exception rules in their network/port scanning software/tool to allow traffic on WebStatistica service port (e.g. 8081).
This is not asking to skip scanning of live score folders/directories, but rather the service port number that the Live score server listens to for SOAP requests.

2. To enhance security of SOAP requests sent to Live score server, user may consider setting the Live score parameter "RestrictSOAPClientIP" to only process SOAP requests with 'allowed' IPs (listed in this parameter field), and block requests from IPs not listed in the filter.
See this KB article # 000040140 for details of Live score parameter 'RestrictSOAPClientIP".

Live Score SOAP request error: The client closed the connection before submitting a complete request.