Hi there!
It took us a few attempts to solve this, including protracted and largely futile dialog with Microsoft, but we can offer a
simple work-around: please set
<authentication mode="None" /> in the <system.web> section of the web.config (see attached), if you use Anonymous auth in your application's UWS authentication settings. In order to continue using Windows auth (default in web.config) in your app, please select "negotiate" or NTLM auth option in UWS application settings and clear Anonymous checkbox.
We are working on making Windows auth in UWS behave in a way that is more consistent with how IIS does it. Hopefully next build (16) will have solution that will let you keep default web.config auth settings (Windows) and combine it with "Anonymous" auth in UWS.
Best regards,
UltiDev Team.
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