Unable to use Web API OData v3 feed in Excel - excel

Question

I have a self-hosted Web API OData v3 service:
public class Startup
{
public void Configuration(IAppBuilder app)
{
HttpConfiguration config = new HttpConfiguration();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
ODataModelBuilder builder = new ODataConventionModelBuilder();
builder.EntitySet<Product>("Products");
config.MapODataServiceRoute(
routeName: "ODataRoute",
routePrefix: null,
model: builder.GetEdmModel());
app.UseWebApi(config);
}
}
I also have the following Controller, which exposes a full CRUD:
public class ProductsController : ODataController
{
ApplicationDbContext db = new ApplicationDbContext();
private bool ProductExists(int key)
{
return db.Products.Any(p => p.Id == key);
}
protected override void Dispose(bool disposing)
{
db.Dispose();
base.Dispose(disposing);
}
[EnableQuery]
public IQueryable<Product> Get()
{
return db.Products;
}
[EnableQuery]
public SingleResult<Product> Get([FromODataUri] int key)
{
IQueryable<Product> result = db.Products.Where(p => p.Id == key);
return SingleResult.Create(result);
}
public async Task<IHttpActionResult> Post(Product product)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
db.Products.Add(product);
await db.SaveChangesAsync();
return Created(product);
}
public async Task<IHttpActionResult> Patch([FromODataUri] int key, Delta<Product> product)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
var entity = await db.Products.FindAsync(key);
if (entity == null)
{
return NotFound();
}
product.Patch(entity);
try
{
await db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!ProductExists(key))
{
return NotFound();
}
else
{
throw;
}
}
return Updated(entity);
}
public async Task<IHttpActionResult> Put([FromODataUri] int key, Product update)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
if (key != update.Id)
{
return BadRequest();
}
db.Entry(update).State = EntityState.Modified;
try
{
await db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!ProductExists(key))
{
return NotFound();
}
else
{
throw;
}
}
return Updated(update);
}
public async Task<IHttpActionResult> Delete([FromODataUri] int key)
{
var product = await db.Products.FindAsync(key);
if (product == null)
{
return NotFound();
}
db.Products.Remove(product);
await db.SaveChangesAsync();
return StatusCode(HttpStatusCode.NoContent);
}
}
I am able to access this feed from a browser without any issues.
However, when I try to get Excel 2013 to use this data feed (using this url: http://localhost:8080/Products), I get this error:
"We can't use the data from this feed. Make sure the external data feed server is available and your connection information is correct"
What can I do to make Excel 2013 to work with this data feed?