Are you on a Mac that has upgraded to Catalina that also plays games through Steam? Since upgrading are you getting an error like this when you launch some games?
I was having this problem with a couple games and could not figure out why. They were 64-bit compatible. They would launch on my laptop, but not on my macMini. Could it have something to do with resolution since my desktop has two monitors and one is an ultrawide? I remember running into this problem soon after upgrading the mini, but forgot what I did to fix it. I promised myself if I did remember how to, I would document it so I wouldn’t forget again. So here was my solution…
On my macMini, my entire Steam Library is located on an external SSD drive. For the games that were giving me the above error I had to do the following with each one:
- Right click on the game in Steam
- Go To “Properties”
- Click on “Local Files” tab
- Click on the “Browse Local Files…” button.
- Find the game application if there are other data files in there
- Open “System Preferences” -> “Security & Privacy” and go to the “Privacy” tab.
- Under the section “Full Disk Access,” unlock the system preferences with your admin credentials, and drag the application into the window on the right.
- Launch the game through Steam again and it *+SHOULD+* (science willing) launch without issue.
- Once the game launches, quit out and go back to the “Security & Privacy” System Preferences and remove the game from “Full Disk Access.”
- It should still launch with the possibility the first time of asking you to enable External Disk Access to Files and Folders which you can allow.
🤷♂️This worked for me for any game that was 64-bit compatible (even the false positives that Steam reports). It’s not a cure all but may be a fix for someone in a niche situation like me.
Also make sure to check out Demon’s Tilt pinball on Mac or PC (or Switch). It’s a great classic pinball game that takes advantage of being a digital table in multiple spooky ways.
