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401 Unauthorised error seen when invoking a web service that requires NTLM authentication (Doc ID 2098004.1)

Last updated on JANUARY 20, 2022

Applies to:

Oracle SOA Suite - Version and later
Information in this document applies to any platform.


When using Microsoft Exchange Web Service, which requires NTLM Authentication, you may get a 401-Unauthorized error.

If the same web service is called from SOAP UI with the same username and password then the web service call is successful.

This can happen when adding the Basic Authentication policy in the SOA project to the Reference.



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