Enable Enabled in Nightly with pref "dom.ipc.plugins.sandbox-level.flash=1", followed by a browser restart. The pref is limited to Nightly. The functionality (in disabled state) is in 61. {| class="wikitable"|-! Level (dom.ipc.plugins.sandbox-level.flash) !! What's Blocked by the Sandbox?|-| Level 1 ||* write access to most of the filesystem* exec, fork|-| Level 2 ||* write access to most of the filesystem* read access to most of the filesystem* exec, fork* printing|}
