Connection to the server failed! when trying to add a slave to multi install network

Versions / Builds Affected

GFI MailEssentials 2015

Status

Resolved

Problem Summary

Connection to the server failed! when trying to add a slave to multi install network. The Configuration UI of the Master server is reachable from the slave, also the master/MailEssentials_Services/MultiNodeConfigurationService.svc opens fine in browser.

TT / JIRAID

2520

How to Identify

By the below errors: "warning","CentralizationConfiguration","Warning: TestSlaveSettings...FAILED: - System.ServiceModel.Security.MessageSecurityException: The HTTP request is unauthorized with client authentication scheme 'Negotiate'. The authentication header received from the server was 'Negotiate oXAwbqADCgEBomcEZWBjBgkqhkiG9xIBAgIDAH5UMFKgAwIBBaEDAgEepBEYDzIwMTUwMjA5MTIxMTU2WqUFAgMHXe2mAwIBKakMGwpWS0FHLkxPQ0FMqhkwF6ADAgEBoRAwDhsMYmUwMDAxMXB4MDIk'. ---> System.Net.WebException: The remote server returned an error: (401) Unauthorized. ---> System.ComponentModel.Win32Exception: The target principal name is incorrect Eventlog error: WebHost failed to process a request. Sender Information: System.ServiceModel.Activation.HostedHttpRequestAsyncResult/35073159 Exception: System.Web.HttpException (0x80004005): The service '/MailEssentials_Services/MultiNodeConfigurationService.svc' does not exist. ---> System.ServiceModel.EndpointNotFoundException: The service '/MailEssentials_Services/MultiNodeConfigurationService.svc' does not exist. at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath, EventTraceActivity eventTraceActivity) at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.HandleRequest() at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.BeginRequest() at System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result) at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) Process Name: w3wp Process ID: 9560

Workaround / Fix Details

The fix has been included in the February 2015 Patch (through auto-updates).

Required Actions

Attach article to case and install the required patch.