In the BPC web, I could use the SSO single sign-on by launching the EPM Add-In for Excel / Word / PowerPoint in the past.
However, after the browser (Firefox) update, I could not use it anymore. It showed as "Install EPM Add-In for Microsoft Office". However, EPM is already installed.
I'm currently using Firefox as my browser.
I did not face this issue with Internet Explorer... anybody knows why?