I'm following this tutorial on using Excel Services REST api and trying to read a range.

If I paste the url into my browser it works and I see the range in my browser.


But if I use jquery ajax in a content or script editor webpart, it doesn't work. First I get an authorization challenge which doesn't accept my credentials and then if I cancel that, I get a 401 unauthorized error.

        "accept": "application/json;odata=verbose",
        "content-type": "application/json;odata=verbose",

I am the site collection owner and have full control over everything. I have lots of REST api code running in other locations in the site, but this is the first that uses the 2010 _vti_bin access point.

Any idea what is going on?

  • try changing the get to a post? – Eric Alexander Oct 6 '16 at 21:54
  • Thanks for the idea. Tried it and got the same result. Usually if it works in the browser bar and/or is a read it is just a GET. – Rothrock Oct 6 '16 at 23:00
  • Are you running the script in a page within http:<site> ? – Christophe Oct 6 '16 at 23:51
  • Yes. On the same page I used a 2013 REST call (/_api/web/lists('guid')/items(#) to retrieve the title and other information about the document and those worked just fine. – Rothrock Oct 7 '16 at 14:37
  • Have you tried it in fiddler? – MickB Oct 10 '16 at 17:10

Using postman to run a few tests.

When I include the headers:

    "accept": "application/json;odata=verbose",
    "content-type": "application/json;odata=verbose",

I get 401 Unauthorized like you are experiencing. Not even admins can draw blood from a turnip or json from ExcelRest.aspx


If I remove the Content-Type entry I get a response back with the data I am looking for.

Getting the data you are looking for:

Use either the $format=ATOM or $format=HTML or $format=image URL parameters to drive the response content type.

| improve this answer | |
  • That is so crazy. Seems like that would be a reason to throw an error or something not require an impossible authentication! In any event it works. I removed content-type from the header, added datType:"text" to the props, used $format=json in the url and added JSON.parse(data) in the done handler. – Rothrock Oct 12 '16 at 14:55

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