Within a newly created loopback framework running `slc arc` I am attempting to connect to an existing SQL Server Express database at `ALEX\SQLEXPRESS` (I've also tried variations like `LOCALHOST\SQLEXPRESS`).

But I am getting the error message: 

> 
> Oops! Something is wrong  
> 
>  Failed to connect to ALEX:undefined in 15000ms
> 
> 
> 

I've also tried `ALEX\\SQLEXPRESS` since it looks like the `undefined` might be caused by the slash.

Unfortunately no luck. Does anyone know how to make this work?

These are the settings

[![the settings](https://i.stack.imgur.com/zsohr.png)](https://i.stack.imgur.com/zsohr.png)

This is the connector that gets created in the folders:

```
{
  "db": {
  "name": "db",
  "connector": "memory"
  },
  "mssql": {
    "host": "ALEX\\SQLEXPRESS",
    "database": "bbdb-dev",
    "password": "********",
    "name": "mssql",
    "user": "sa",
    "connector": "mssql"
  }
}

```