QRS Api: getting "403 forbidden" error when using NTLM

[master_t]

Hello

I'm trying to use the QRS API to delete an extension on our qlik sense server, using this method:

https://help.qlik.com/en-US/sense-developer/April2018/Subsystems/RepositoryServiceAPI/Content/Reposi...

however when I make the call, it only works if I use a certificate (exported from the QMC) to authenticate.

If isntead I try to use NTLM authenticatio, the server always replies with "Error 403 - forbidden", even if my user has all the appropriate permissions

Any idea how to solve this? How do I enable using NTLM to authenticate? It says in the documentation that it is supported:

https://help.qlik.com/en-US/sense-developer/September2017/Subsystems/RepositoryServiceAPI/Content/Re...

[subramani_r]

Actually, its the reverse for me. I am getting 403 with cert based auth, but with NLTM it works fine. Can you please suggest what might be going wrong?