Hi all, Firefox Version: 41.0.2 System Operation: Centos/Redhat 6.4 and Centos 7.2 Issue: Recently we encounter an weird issue is the web outlook calendar can't display in FF, this issue only happens in Linux system, if we switch to chrome or in windows, the calendar are display normally. And I also tested in Centos 7.2, the calendar also display well, but in Centos 7.2 the firefox version is 47.0. So I just wondering there is some thing wrong in FF 41.0.2. Because of the GLIBC version is too older in centos/Redhat 6.4, firefox 41.0.2 is the lasted version that we can install, so I can't test the newer version. Could you please help to us to take a look why calendar can't display in 41.0.2 version? If you need more information, please feel free to let me know. Thanks!