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Why do I get 401 error when trying to access REST API?
So basically, I am trying to connect to a REST API online. Easy enough right? However I am getting a 401 (Unauthorized) error whenever I try to connect. I am using a C# console app to test this, and I have also tried using PUTMAN (Google Chrome App to view HTTP Requests). I follow all the steps listed.
What does 401 mean in HTTP request header?
The client MAY repeat the requestwith a suitable Authorization header field (section 14.8). If the request already included Authorization credentials, then the 401 response indicates that authorization has been refused for those credentials.
Do you need Auth to use REST API?
REST API needs authentication and that can be achived by various ways, easiest and most common one being Basic Auth (using an HTTP Header encoded in Base64).
How to request HTTP 401 Unauthorized or 403 Forbidden?
401 Unauthorized. The request requires user authentication. The response MUST include a WWW-Authenticate header field (section 14.47) containing a challenge applicable to the requested resource. The client MAY repeat the request with a suitable Authorization header field (section 14.8).
Why do I need the old outlook REST API?
But I also need the “old” O365 Outlook REST API, because only this API has the capability to change mailbox rules (only in the beta API though, but this is currently more like a “proof of concept”). DISCLAIMER: The following PHP code is very ugly, but this is just to test if it even works.
How to fix 401 Unauthorized errors using the connector?
Go to Solution. 03-01-2019 11:50 PM Hi @kevingeorget , thank you for your post. I gave this a go too, in line with Geetha’s blog you posted and I found I got the same error and other 400 errors. I then tested it with the below and eventually it worked in this way: I added an underscore to the start of the URI and placed my email address inside ‘ ‘.
When does HTTP error 401.1 with pre-authentication headers occur?
The web browser may prompt you to enter your username and password. Or, the HTTP 401.1 error message may be displayed in the browser window. This behavior is by design. The 401.1 response will occur if the web browser’s first request that’s sent to the IIS application contains one of the following headers:
How to find unexpected 401 status in IIS?
Start the Fiddler Tool and enable traffic capture. Browse to the IIS web application such that it will result in the prompt for credentials. In Fiddler, look for the request that resulted in the 401. Looking at the raw request and response views, you’ll see entries similar to the following ones:
Why is my C # console getting a 401 error?
However I am getting a 401 (Unauthorized) error whenever I try to connect. I am using a C# console app to test this, and I have also tried using PUTMAN (Google Chrome App to view HTTP Requests). I follow all the steps listed. I know my username and password is correct (have logged into the Dynatrace Portal).
What to do if you get 401 Unauthorized error?
The user account is still a SCA on the site and the password is still valid. The bottom line var resultTP = client.DownloadString (uriTP); now starts throwing 401 (unauthorized) error.