Issues downloading UE 5.8.4 on MacOS 27.2

Hello everyone!

I am looking to gain insight as to why UE (Unreal Engine) 5.8.4 is unable to initialize on my Mac M5 Max running MacOS 27.2. after multiple attempts, I keep getting the same UE error code on the Epic Games Installer: IS-0007

I have tried:

  • Deleting Epic Games and then redownloading in a different folder
  • Deleting UE and then redownloading multiple versions (Versions 5.8.4, 5.0.3, and 4.27)
  • Running multiple terminal commands (including some careful “sudo” commands) to bypass Gatekeeper

All of these to no avail, and am not sure what else to do. I have resolved to this conclusion: That since the most recent Hotfix of UE (5.8.4) was released on November 3rd of this year, and MacOS 27.2 was released on September 14th of this year, UE has not yet been verified with MacOS security and that Gatekeeper just will not let it download at this time. Now, I know that I may catch some flak for trying to download this program on a Mac and not a Windows machine (which from what I am to understand Windows is native to UE), I get that. I have been able to download UE 5.7 on another Mac-based machine and it runs great, so I know that it can be done. Is there something else that I can do? Is there something that I am missing? Any help that you can provide would be much appreciated. Thank you in advance for your time and input.