Sorry for the delay… I’ve had to replace the route and body with XXX, but this is the raw log details:
POST /api/XXX
accept: /
accept-encoding: gzip, deflate
content-length: 1096
content-type: application/json
host: 167.26.148.186:12188
user-agent: PostmanRuntime/7.3.0
{
XXX
}
HTTP/1.1 401
status: 401
content-length: 0
date: Tue, 13 Nov 2018 12:10:14 GMT
proxy-support: Session-Based-Authentication
server: Microsoft-HTTPAPI/2.0
www-authenticate: NTLM
It only makes this initial request and doesn’t attempt to respond to the server’s request for NTLM auth. However if I make the same request using a c# app and monitor in fiddler, i see it authenticating successfully using NTLM over 3 requests, so the issue seems unique to postman.