This was not the case for 3+ years (even after declared unsupported) and recently a lot of people have had this error wether they were on mojave or older versions(pinned post was posted 17h ago). I'm fully aware of what 'unsupported' means and usually in the world of OSX, you get a prompt saying you *can't* run this on your version because the app is using features and libraries from later osx versions.
I know on the requirements it said osx 10.9 or later but its been working fine and opens. I've tried rebooting, re-installing, deleting Application Support/ Steam folder, and running xattr cmd on terminal to no avail.
#Mac 10.7.5 os mac os x#
If you can't upgrade your Mac OS X to a supported version, then you won't be able to use it anymore. I'm running steam on my old macbook 4,1 and it's been working fine on osx 10.7.5 up until now where it crashes when I open it. Steam no longer runs on your outdated computer. So far you were lucky, your luck has run out. The first is a new build of the upcoming OS X Lion 10.7.5 release.No known issues are currently present in 10.7.5.
A program may continue to work, but it is not tested or will it be fixed if it no longer works on that platform. Today, Apple has seeded a couple new Mac-related betas to registered OS X developers. Originally posted by Cathulhu:Unsupported means unsupported.