When we monitor the proxy server to open the Plugin ESRI MAPs for office, the application attempts to connect to the URLs, but as
Anonymous user, ie, NO sends user credentials to start session. That's why our proxy server blocks it. And it is not technically
possible to create a rule in the proxy to allow anonymous connections GIS URLs, as this security setting is applied to the internal networks of proxy, not the URLs visited by users.
Anyone knows any solution to this problem ??