Re: Desactivate NTLM for CMIS but keep NTLM authenticate for users
My remarks should not be construed as an advice on what to do. They were merely meant to explain that this is not supported, and you'd need to change a central piece of out-of-the-box configuration/implementation.
If you'd really wanted to go in that direction, you would have to change the servlet filter mappings inside the web.xml file bundled in the Alfresco Repository WAR. To do that, you should be familiar with the servlets specification, what the various Alfresco filters do and how they interact with other components of Alfresco. Again, this is not something that I advice or recommend.