I am in the farm administrator's group. Every time I click on the "Reanalyze Now" I get redirected to a "403 FORBIDDEN" page.
I am on SharePoint 2013 Enterprise.
You may want to try running the analyser jobs using Power Shell. Check this out: http://www.sharepointdiary.com/2014/01/force-run-sharepoint-health-analyzer-jobs-ondemand.html