diff --git a/lib/x11/auth.js b/lib/x11/auth.js
index b9b22c1..c1b7290 100644
--- a/lib/x11/auth.js
+++ b/lib/x11/auth.js
@@ -67,7 +67,15 @@ module.exports = function( display, host, cb )
         }
         fs.readFile(XAuthorityFile, function (err, data) {
 
-            if (err) throw err;
+            if (err) 
+            {
+                if (err.code == 'ENOENT')
+                {
+                    cb('','');
+                    return;
+                }
+                throw err;
+            }
 
             var auth = parseXauth(data);
             for (cookieNum in auth)
@@ -79,8 +87,8 @@ module.exports = function( display, host, cb )
                     return;
                 }
             }
-            throw 'No auth cookie matching display=' + display + ' and  host=' + host;
-
+            // throw 'No auth cookie matching display=' + display + ' and  host=' + host;
+            cb( '', '' );            
         });
     }   
 }
\ No newline at end of file