I'm currently just trying to run this sample code: https://msdn.microsoft.com/en-us/library/dn705832(v=msads.90).aspx, I've originally posted this question on Stackoverflow: http://stackoverflow.com/questions/35443429/issues-using-oauth-with-the-bing-ads-api
Unfortunately, I can't seem to get my application to authenticate. Every time I try, it just returns a 401 Unauthorized error with no explanation.
Here are the steps I've taken so far:
1. Enabled API access in the Bing Merchant Center:
Have my API user setup with a dev token (on https://developers.bingads.microsoft.com/Account): http://i.stack.imgur.com/Mmd0C.png
2. Registered my API application: http://i.stack.imgur.com/JZuD4.png
3. Gave my user permissions to use the application: http://i.stack.imgur.com/crTGq.png
4. Updated the authentication in the example code:
Instead of having the Username/Password/DeveloperToken in the headers of the sample code, I replaced it to only have AuthenticationToken and DeveloperToken:
var headers = new WebHeaderCollection();
headers.Add("AuthenticationToken", AccessToken /* a really long base64 encoded string */);
headers.Add("DeveloperToken", DeveloperToken /* 012X111111111111 */);
The `DeveloperToken` is from https://developers.bingads.microsoft.com/Account: http://i.stack.imgur.com/WIybc.png
The `AuthenticationToken` is from:
1. Accessing this in my browser: `https://login.live.com/oauth20_authorize.srf?client_id=00000[myclientid]&scope=bingads.manage&response_type=token&redirect_uri=https://login.live.com/oauth20_desktop.srf`
2. Logging in with my Microsoft account, clicking yes
3. It returns this URL:
`https://login.live.com/oauth20_desktop.srf?lc=1033#access_token=[some long base 64 string]&token_type=bearer&expires_in=3600&scope=bingads.manage&user_id=[some hex string]`
4. I take the long url-encoded base64 string ("access token") and use that as my authentication token
No matter which token I use from the oauth response, I keep getting a 401 Unauthorized error from the API endpoint (the body message says "The specified user is not authorized."). What am I doing wrong here?
