Recently got a call about unable to add attachments in Outlook Web App ( OWA ). The person was using Firefox. The first thing they were missing was they weren’t selecting “This is a private computer”, but even after checking this option they would still get a security error.
They did have Internet Explorer, and when we used this and everything worked. There were two issues that came up. One was allowing Silver Light to interact in the browser and the other was allowing “Compatibilty View Settings” in the options of Internet Explorer. It auto populated with the web address so we just needed to click “add”.
I was unable to locate the settings in Firefox, but at least they were able to add the attachments and get the job done.
I hope this helps someone else out there….