diff --git a/core/enig_error.js b/core/enig_error.js
index 3f189dd7..01e62c40 100644
--- a/core/enig_error.js
+++ b/core/enig_error.js
@@ -34,8 +34,9 @@ exports.Errors = {
     ExternalProcess     : (reason, reasonCode)  => new EnigError('External process error', -32005, reason, reasonCode),
     MissingConfig       : (reason, reasonCode)  => new EnigError('Missing configuration', -32006, reason, reasonCode),
     UnexpectedState     : (reason, reasonCode)  => new EnigError('Unexpected state', -32007, reason, reasonCode),
-    MissingParam        : (reason, reasonCode)  => new EnigError('Missing paramater(s)', -32008, reason, reasonCode),
+    MissingParam        : (reason, reasonCode)  => new EnigError('Missing paramter(s)', -32008, reason, reasonCode),
     MissingMci          : (reason, reasonCode)  => new EnigError('Missing required MCI code(s)', -32009, reason, reasonCode),
+    BadLogin            : (reason, reasonCode)  => new EnigError('Bad login attempt', -32010, reason, reasonCode),
 };
 
 exports.ErrorReasons = {
@@ -44,4 +45,5 @@ exports.ErrorReasons = {
     NoPreviousMenu      : 'NOPREV',
     NoConditionMatch    : 'NOCONDMATCH',
     NotEnabled          : 'NOTENABLED',
+    AlreadyLoggedIn     : 'ALREADYLOGGEDIN',
 };
\ No newline at end of file
diff --git a/core/servers/login/ssh.js b/core/servers/login/ssh.js
index 72f91a2a..5f0ff05f 100644
--- a/core/servers/login/ssh.js
+++ b/core/servers/login/ssh.js
@@ -10,6 +10,7 @@ const userLogin         = require('../../user_login.js').userLogin;
 const enigVersion       = require('../../../package.json').version;
 const theme             = require('../../theme.js');
 const stringFormat      = require('../../string_format.js');
+const { ErrorReasons }  = require('../../enig_error.js');
 
 //  deps
 const ssh2          = require('ssh2');
@@ -70,7 +71,7 @@ function SSHClient(clientConn) {
 
             userLogin(self, ctx.username, ctx.password, function authResult(err) {
                 if(err) {
-                    if(err.existingConn) {
+                    if(ErrorReasons.AlreadyLoggedIn === err.reasonCode) {
                         return alreadyLoggedIn(username);
                     }
 
@@ -96,7 +97,7 @@ function SSHClient(clientConn) {
 
                 userLogin(self, username, (answers[0] || ''), err => {
                     if(err) {
-                        if(err.existingConn) {
+                        if(ErrorReasons.AlreadyLoggedIn === err.reasonCode) {
                             return alreadyLoggedIn(username);
                         }
 
diff --git a/core/system_menu_method.js b/core/system_menu_method.js
index 9218e34a..8485a90f 100644
--- a/core/system_menu_method.js
+++ b/core/system_menu_method.js
@@ -2,10 +2,11 @@
 'use strict';
 
 //  ENiGMA½
-const removeClient      = require('./client_connections.js').removeClient;
+const { removeClient }  = require('./client_connections.js');
 const ansiNormal        = require('./ansi_term.js').normal;
-const userLogin         = require('./user_login.js').userLogin;
+const { userLogin }     = require('./user_login.js');
 const messageArea       = require('./message_area.js');
+const { ErrorReasons }  = require('./enig_error.js');
 
 //  deps
 const _                 = require('lodash');
@@ -26,12 +27,14 @@ function login(callingMenu, formData, extraArgs, cb) {
     userLogin(callingMenu.client, formData.value.username, formData.value.password, err => {
         if(err) {
             //  login failure
-            if(err.existingConn && _.has(callingMenu, 'menuConfig.config.tooNodeMenu')) {
+            if(ErrorReasons.AlreadyLoggedIn === err.reasonCode &&
+                _.has(callingMenu, 'menuConfig.config.tooNodeMenu'))
+            {
                 return callingMenu.gotoMenu(callingMenu.menuConfig.config.tooNodeMenu, cb);
-            } else {
-                //  Other error
-                return callingMenu.prevMenu(cb);
             }
+
+            //  Other error
+            return callingMenu.prevMenu(cb);
         }
 
         //  success!
diff --git a/core/user.js b/core/user.js
index 6c2b964d..27f4775a 100644
--- a/core/user.js
+++ b/core/user.js
@@ -45,9 +45,10 @@ module.exports = class User {
 
     static get AccountStatus() {
         return {
-            disabled    : 0,
-            inactive    : 1,
-            active      : 2,
+            disabled    : 0,    //  +op disabled
+            inactive    : 1,    //  inactive, aka requires +op approval/activation
+            active      : 2,    //  standard, active
+            locked      : 3,    //  locked out (too many bad login attempts, etc.)
         };
     }
 
diff --git a/core/user_login.js b/core/user_login.js
index a3b2089b..c4f1bcf1 100644
--- a/core/user_login.js
+++ b/core/user_login.js
@@ -8,6 +8,10 @@ const StatLog           = require('./stat_log.js');
 const logger            = require('./logger.js');
 const Events            = require('./events.js');
 const Config            = require('./config.js').get;
+const {
+    Errors,
+    ErrorReasons
+}                       = require('./enig_error.js');
 
 //  deps
 const async             = require('async');
@@ -48,12 +52,10 @@ function userLogin(client, username, password, cb) {
                 'Already logged in'
             );
 
-            const existingConnError = new Error('Already logged in as supplied user');
-            existingConnError.existingConn = true;
-
-            //  :TODO: We should use EnigError & pass existing connection as second param
-
-            return cb(existingConnError);
+            return cb(Errors.BadLogin(
+                `User ${user.username} already logged in.`,
+                ErrorReasons.AlreadyLoggedIn
+            ));
         }
 
         //  update client logger with addition of username