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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / How do I set up the HT...
Microsoft Dynamics CRM (Archived)

How do I set up the HTTP Header to include the authentication credentials when I have to access a WEB API Restful resource using java script (or postman/fiddler) for a Microsoft Dynamics On-Premise instance?

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How do I set up the HTTP Header to include the authentication credentials when I have to access a WEB API Restful resource using java script (or postman/fiddler) for a Microsoft Dynamics On-Premise instance?

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  • Community Member Profile Picture
    Community Member on at

    You can use XMLHttpRequest and set the headers. Refer to this link

    stackoverflow.com/.../how-can-i-use-an-ajax-request-to-fire-webservice-calls-in-javascript

  • Community Member Profile Picture
    Community Member on at

    I am specifically looking for the header names that need to be passed in with a request for the authentication and authorization to succeed.(namely  username, password and domain, may be?)

  • Community Member Profile Picture
    Community Member on at

    Have you tried adding username, password same as it has added SOAPAction, Accept etc. ?

  • Community Member Profile Picture
    Community Member on at

    Would this apply to the Web API as of CRM 2016 (8.0) On-Premise? Or would it only work for the older SOAP service?

  • Community Member Profile Picture
    Community Member on at

    I have the same proble trying to use Postman and request WEB API 8.1 CRM 2016 (OnPrem), any clues?

  • Community Member Profile Picture
    Community Member on at

    It's taken me a long time to figure this out, but Dynamics CRM On Premise uses NTLM authentication. In Postman, this is as easy as selecting "NTLM Authentication [Beta]" as the authorization type and providing a username and password. Behind the scenes, this performs a 3 step handshake with an authentication server. This has been implemented in many server-side langauges (such node, python, etc.), but I haven't seen a library for client-side javascript. There is a Stack Overflow question that has a number of useful resources exploring that side of things though; you can find it here: https://stackoverflow.com/questions/18527749/javascript-ajax-ntlm-authentication . I hope that helps.  

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