If you have tried the above, the issue might be related to issues caused by buggy DLC files, which often masquerade as bigfile errors. Try launching the game with specific DLCs disabled.
Ensure the drive where your game is installed has at least 15-20 GB of free space left over after installation so it has breathing room to unpack assets.
If you have tried these methods and the game still fails to open, let me know:
If you have tried the above, the issue might be related to issues caused by buggy DLC files, which often masquerade as bigfile errors. Try launching the game with specific DLCs disabled.
Ensure the drive where your game is installed has at least 15-20 GB of free space left over after installation so it has breathing room to unpack assets.
If you have tried these methods and the game still fails to open, let me know: