What version of Java works with FOS v6.2.0?
FOS 6.2.x is supported with JRE 1.6 but 7 it's work.
well... with me didnt work, neither Firefox, nor IE (or the new MS Edge). Always the same fatal error: "The version of Java plugin needed to run the application is not installed. The page from where the plugin can be downloaded will be opened in a new window. If not, please click here: Download correct Java version. "
My switch config: 6.2.2g
->neither Firefox, nor IE (or the new MS Edge)
Firefox and IE work fine, Edge is not certified for this switch.
I assume you have several Java version installed, at this point I would suggest to Uninstall all Java release incl. 1.8, and then install Java 7 update 62 or higher 64 Bit.
Start IE and from IE download and install JRE 7 64 Bit