IS-IN-FC02 cannot install UE 5.2 on mac

Development Programming & Scripting C++
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Hi,

I am experiencing a persistent installation error IS-IN-FC02 while trying to install UE 5.2 or 5.7on my Mac.

I have already tried the following troubleshooting steps, but the issue remains:

  1. Granted Full Disk Access to the Epic Games Launcher in System Settings.

  2. Verified that the installation folder (/Users/Shared/Epic Games) has Read & Writepermissions.

  3. Cleared the webcache folder in ~/Library/Caches/com.epicgames.EpicGamesLauncher.

  4. Restarted the launcher and my Mac multiple times.

Despite these efforts, the installation still fails with the same error code.

System Information:

  • Mac Model: MacBook Air M2

  • macOS Version: macOS Ventura 13.7.8( I also tried

  • Storage: Internal SSD

Could you please investigate this issue and let me know if there are any other steps I should take?

Thank you.

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2

IS-FC02 or IS-RE-FC02: Failed to create file - Epic Games Store Support

3

I’ve already tried this, but the issue still persists.

4

I’m having the same error…

5

Im also having this error

6

same error here, I have tried literally everything

7

I am having the same issue, it stops installing at around 80%. Then goes to intitializing to then resuming. Then gives me this failure error…

8

Same error

9

IS-IN-FC02 issue on Mac with Epic Games Launcher 19.3.3:

After extensive debugging, I found that the error is NOT related to file corruption, permissions, or disk space. The real issue is that the launcher downloads and constructs all files correctly in the staging area (~49GB, 142,000+ files), but then MoveFromStageTime: 0 — it never moves anything from staging to the final destination, and fails with FC02.

This happens consistently regardless of:

  • Install path (Shared or home directory)
  • Selected components (with or without Engine Source, Starter Content, Templates)
  • Running the launcher with sudo
  • Clearing all caches and manifests

Key log evidence:
Build Stat: MoveFromStageTime: 0 us
Build Stat: FileAttributesTime: 0 us
Build Stat: FailureType: FileConstructionFail
Build Stat: ProcessSuccess: FALSE

This looks like a bug introduced in launcher version 19.3.3 on macOS 15.x (Sequoia). The staging phase completes successfully but the move-to-destination phase never executes.

System: MacBook Pro, macOS 15.7.2, Apple Silicon, Launcher 19.3.3

Hope Epic can investigate this. In the meantime I’m using Remote Build from Windows as a workaround.

10

Hope they will fix it soon.Let me know if you got solution.