The service endpoint failed to listen on the URI 'LoginService.svc' because access was denied

WCF services requires administrator rights. So you must run the VS as administrator to run the WCF project.

Or refer the below for configuring the Net.TCP binding.

<configuration>  
   <system.serviceModel.activation>  
       <net.tcp listenBacklog="16" <!-- 16 * # of processors -->  
          maxPendingAccepts="4"<!-- 4 * # of processors -->  
          maxPendingConnections="100"  
          receiveTimeout="00:00:30" <!-- 30 seconds -->  
          teredoEnabled="false">  
          <allowAccounts>  
             <!-- LocalSystem account -->  
             <add securityIdentifier="S-1-5-18"/>  
             <!-- LocalService account -->  
             <add securityIdentifier="S-1-5-19"/>  
             <!-- Administrators account -->  
             <add securityIdentifier="S-1-5-20"/>  
             <!-- Network Service account -->  
             <add securityIdentifier="S-1-5-32-544" />  
             <!-- IIS_IUSRS account (Vista only) -->  
             <add securityIdentifier="S-1-5-32-568"/>  
           </allowAccounts>  
       </net.tcp>  
    </system.serviceModel.activation>
</configuration> 

Reference:

https://learn.microsoft.com/en-us/dotnet/framework/wcf/feature-details/configuring-the-net-tcp-port-sharing-service