free space beyond the install size. The engine often requires a large "swap" space for unpacking these bigfiles during runtime. 4. Epic Games Specific Fix: Clear the Webcache If you are playing the Epic Games Store

Often, the bigfile.000.tiger files are partially corrupted, causing the validation to pass but the game to still fail. Deleting these specifically forces the launcher to re-download only those files.

Check to prevent layout conflicts. Click Apply , then OK . Step 3: Whitelist the Game in Windows Defender / Antivirus