Unsuccessful authentification by mobile app

[Mordiros]

Hi, @mrbbot . Many thanks for your activity!
I whould like to use domain user creditinals in mobile app.
I have http-service which published at IIS web server with NTLM-authentification. It works successful in web browser but not in mobile app.
I use the same creditinals, tried to specify username and domain as different parameters and name at format [domain][username] as at browser but it dose not any effects.
I wonder maybe some properties in IIS is wrong?
Do you now whats the reason?
Can you share a link to instructions or recommendations for setting up?

[mrbbot]

Hello! 👋 When you say it works successfully in a web browser, are you accessing your HTTP service via Flutter for Web, or just navigating to it directly in the URL bar? Do you know which version of NTLM authentication your IIS web server is setup to accept?

[Mordiros]

I use only browser, such as Chrome.
I mean, as soon as I enter the URL at adress bar, a dialog box immediately appears for entering login and password.