How to Configure NTLM Authentication for a specific API in Apigee

[umannggoel]

As one of my backend api required a Microsoft windows Authentication,So when I call the api with NTLM header, I am getting 401 response.

Response Details.

<IIS 8.5 Detailed Error - 401.2 - Unauthorized>

Could someone help me how to make a success connection with backend which is based on windows authentication.

[umannggoel]

@Dino Could you please help here.

[mnallani]

Hi,

Did you fix this error. if so please revert back. we are expereincing the same issue.

Thanks,

murali.

[ramadevikankana]

Hi,

Did you find out a way to configure NTLM authentication? Please reply as we are facing same issue.

Thanks,

Ramadevi.

[Ariwibawa]

Are you using google load balancer? if so it seems that load balancer doesn't support NTML authentication, the only way i know is to use public IP on its VM.

[Rushikesh1995]

Hi, were you able to implement NTLM Auth in Apigee?

[dchiesa1]

Someone in the long distant past did this, with a Java callout. 

But, I'd advise against trying this. Why not use Azure AD (Entra ID) to get an identity token, and BOOM, problem solved?  Don't invest further in NTLM.