ActiveX
Microsoft Windows
Mozilla does not support ActiveX controls natively. However, a plugin for ActiveX controls support is available. It will not download or install controls itself, and it will only host controls that are already installed and marked safe for scripting, so it is not as insecure as ActiveX normally is. The current version of ActiveX plug-in does not yet allow controls to be scripted.
You must ensure that, if you intend to install the ActiveX plugin, you get the correct version for your version of Mozilla Suite/Firefox. Each version of the plugin is only compatible with a small range of Mozilla Suite/Firefox versions. If you have the wrong version of ActiveX, it has been known to disable/interfere with Flash content, and there is no guarantee that the plugin will obey its configuration (as specified in the file activex.js, located in the defaults\pref subfolder of the browser's installation directory).
To avoid compatibility issues, you should also uninstall the ActiveX plugin or, at the minimum, remove the plugin file "npmozax.dll" from the browser's installation directory\plugins folder when upgrading your browser to a newer version.
Warning
ActiveX can pose a security risk to your computer. If you have the Adblock extension with OBJ-TABS enabled and install this plugin, almost ANY activex control will run! You don't want that... 1 2
Linux (x86)
Recent versions of CrossOver Office ship with the Mozilla ActiveX plugin, but don't expect it to work as well as it would on Windows.
