I have a multi-server SharePoint 2013 farm set up (web server, app server, db server) with a web app that allows anonymous access and pages with PerformancePoint charts.
I can successfully view the dashboard pages when I'm logged into SharePoint so I know everything is set up correctly.
I have an issue in the anonymous site when viewing a dashboard page where I'm first prompted for credentials then after clicking Cancel the dashboard chart shows as a broken image icon.
Fiddler tells me that a request is made to /_layouts/15/PPSWebParts/OlapViewCache.aspx?cacheID=xxxx and the response is 401 - Unauthorized.
I've tried this in IE and Firefox and get the same result.
I have access to an old SharePoint 2010 and even older SharePoint 2007 environment that both have dashboard pages on anonymous web applications and in both cases I see OlapViewCache.aspx being called and the charts render successfully.
I found this post with a similar issue: social.technet.microsoft.com/Forums/sharepoint/en-US/330e753a-d9ed-47c2-9917-113dcd27f13d/sp2013-performancepoint-report-in-webpart-required-login
Has anyone successfully been able to view PPS charts anonymously in SharePoint 2013? I'm wondering if this is a change in the product in 2013, a bug in the product or a configuration setting that I'm missing.