Web console error on small office administration

i am having this error after trying to login to my web console;

[HttpWebRequest_WebException_RemoteServer]

at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object outs, IAsyncResult result)
at System.ServiceModel.ClientBase1.ChannelBase1.EndInvoke(String methodName, Object args, IAsyncResult result)
at Avast.Net.Console.SbcServiceConnectionPoint.SbcConnectionPointServerClient.SbcConnectionPointServerClientChannel.EndLogin(IAsyncResult result)
at Avast.Net.Console.SbcServiceConnectionPoint.SbcConnectionPointServerClient.Avast.Net.Console.SbcServiceConnectionPoint.ISbcConnectionPointServer.EndLogin(IAsyncResult result)
at Avast.Net.Console.SbcServiceConnectionPoint.SbcConnectionPointServerClient.OnEndLogin(IAsyncResult result)
at System.ServiceModel.ClientBase`1.OnAsyncCallCompleted(IAsyncResult result)

Make sure avast services are running fine
try to use different browser, Mozilla or chrome
try to use ip address or local host as url

http://localhost:8731
http://xxx.xxx.xxx.xxx:8731