Pak chunk signature verification failed!

Hello.

When i press the Launch button it shows the following error message:

Pak chunk signature verification failed!
Chunk Index: 34360
Chunk Offset: -2043150336
Chunk Size: 36253

Fatal error: [File:Unknown] [Line: 3890]
Trailing magic number (0d) in ‘…/…/…/FortniteGame/Content/Paks/pakchunk0_s3-WindowsClient.pak’ is different than the expected one. Verify your installation.

0x00000000C8154008 KERNELBASE.dll!UnknownFunction []
0x0000000008451F29 FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x00000000083E9F5B FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x00000000083B6098 FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x00000000097504E1 FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x000000000974643C FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x00000000097530C7 FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x0000000009750B94 FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x000000000744241E FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x000000000744479E FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x0000000007441CFA FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x0000000007441F5A FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x000000000744904F FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x000000000A00ADC7 FortniteClient-Win64-Shipping.exe!UnknownFunction []
0x00000000CAD81FE4 KERNEL32.DLL!UnknownFunction []
0x00000000CAF7EFC1 ntdll.dll!UnknownFunction []
0x00000000CAF7EFC1 ntdll.dll!UnknownFunction []

What do i have to do to fix this?

Hello,

For Fortnite issues, please visit http://fortnitehelp.epicgames.com/

There you will find various troubleshooting articles as well as an Email Us button that you can use to get in touch with one of our support staff who can assist you further with this.

Thanks