📅 August 23, 2016
Have you seen this error message before?
When installing a fresh Linux distribution on a new system, it is sometimes easy to assume that some software has been installed by default after becoming accustomed to using Linux on a reliable system that has had the software present for a long time.
One such example is Archive Manager. It will not extract all file formats by default until you install extra packages that give it that ability. RAR is one case. By default, Archive Manager will extract a few basic formats, such as ZIP, but not RAR.
We need to install additional software so other file formats can be extracted.
What makes this error perplexing is that you might be able to extract files by dragging and dropping them from the archive individually but not as a group from the context menu.
sudo apt-get install unrar
This can also be accomplished from Software Manager.
Even though unrar is a standalone terminal program, it resolved this issue for me. No reboot was required. RAR files now extract as a group from the context menu.