How to Fix Fortnite IS-BV04 Error: Can’t Install Game or Corrupt data

Fortnite is a popular online battle royale game developed by Epic Games. The game offers plenty of characters, gameplay modes, weapons, and other stuff, including the awesome animated graphics. However, some of the PC players are experiencing the Fortnite IS-BV04 Error that pops up whenever trying to launch the game and says they can’t install the game or corrupt data. Are you also getting the same? Then check the guide below.

Epic Games has officially acknowledged the issue and mentioned that the IS-BV04 is related to Build verification failure due to a mismatched hash problem. Now, you may ask what that is. So, according to Epic Games, this error code will appear when you have a valid file & file size but the file’s hash value is incorrect. This particular issue can occur because your hard disk uses the incorrect file system, which is required to install your game, or it may be due to faulty memory.

How to Fix Fortnite IS-BV04 Error: Can’t Install Game or Corrupt data

So, coming to the topic, Epic Games has suggested two troubleshooting steps that should fix the issue properly. However, if these steps won’t work for you, then you can follow additional methods provided by us as well. So, without further ado, let’s jump into it.

1. Verify Hard Disk (NTFS file system)

• Click on the Start menu on your PC.
• Go to This PC (File Explorer) > Right-click on HDD where you’ve installed the Fortnite Epic Games launcher.
• Click on Properties > Check whether the file system is showing NTFS or not. If yes, then you can follow the next method. If not, then it will be under the FAT32 file system.
  • So, in order to convert the FAT32 file system to NTFS, you can check this guide.
• Once done, restart your PC and try to run the Fortnite game.

2. Check Memory Test

If your PC has a corrupted RAM, then this error code may appear. So, check out the following steps:

• Click on the Start menu.
• Type ‘Windows Memory Diagnostic’ and hit Enter to open it.
• Click to select the ‘Restart Now and check for problems (recommended)’ option.
• The checking process will start, and if there are any errors found, you’ll need to change your RAM at first and then run the game again. (This process isn’t only for gaming. If there is seriously any issue with your RAM, don’t be casual and replace it as early as possible for your PC performance)