I have installed a new empty site using EPiServer v8.0. The site was created using the Visual Studio extension running as Administrator. When I run the site I get a database connection error: 

```
"A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 50 - Local Database Runtime error occurred. Error occurred during LocalDB instance startup: unable to create the SQL Server process.

```

)"

My connection string from web.config is like so:

```
<add name="EPiServerDB" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|EPiServerDB_1293efd2.mdf;Initial Catalog=EPiServerDB_1293efd2;Connection Timeout=60;Integrated Security=True;MultipleActiveResultSets=True" providerName="System.Data.SqlClient" />

```

I have installed the Alloy site side-by-side and this works OK. The connection string for Alloy is the same as my empty site, with the exception of the database name.

I have lots of these errors in my Event Viewer application log from SQLLocalDB:

```
Windows API call CreateProcessAsUserW returned error code: 740. Windows system error message is: The requested operation requires elevation.
Reported at line: 3705. 

```