IIS 7 and Above
IIS Windows Authentication prompts for site pages multiple times, aut...
Re: IIS Windows Authentication prompts for site pages multiple times,...
May 10, 2017 12:38 AM|Ken Schaefer|LINK
I'm out of ideas, and I am unable to figure out the correct terms to search on.
I'm having a little difficulty following your exact configuration. The last snippet of XML you've posted shows AnonymousAuthentication is enabled, and WindowsAuthentication is disabled. This matches non of the description of your sections (root and /reports)
in your initial paragraphs.
Additionally, it shows authPersistNonNTLM="true", which would affect Kerberos based authentication. you haven't described whether the client is using NTLM or Kerberos for requests. Additionally, are the requests GET requests or POST requests?
Can you clarify your exact setup please?