AES Keys
Encryption keys to unpack the current build's game files.
Build 42.40-CL-59086525Updated Oct 15, 2026, 8:00 AM
What are these? Fortnite ships assets in encrypted .pak / .ucas archives ("pakchunks"). Epic rotates these AES keys every update. Dataminers use them with tools like FModel to unpack files — the optional chunks often hide unreleased skins and collabs.
Main key
bf0a59e9a8777ea50b2df5b7e73f6913f64f62d6b9ce81277dd4a5cb861139a3Dynamic keys
5 keys
| Pakchunk | GUID | AES key | |
|---|---|---|---|
| pakchunk1011-WindowsClient.ucas | 1DE29A86AC8CB0600809A6C5EC89C2E6 | 916c06df8ecfb8ffe856af5b04adfcade59148a7eed19bd52e167efc10dca2f9 | |
| pakchunk1015-WindowsClient.ucas | 57445AED405B97F5918B4C16110A7CAA | 6924c17981e994a96530f8da07f10c6abd9abab5e4d5bbe0d7f9cec1709c0553 | |
| pakchunk1018-WindowsClient.ucas | 699C009F0CCC6735BC68DF35735FE1BC | fe748b0b017b20dc84ce6b4b55cc20174b2177c9d48dec9b9348f8e4d22e5b01 | |
| pakchunk1021-WindowsClient.ucas | 710B2A22C040460E34DBC51F5EAE698B | a2de1defa0ae63da029781599de50a2af9cbe06eeae76c0a48a4f8aadf0e54ea | |
| pakchunk1025-WindowsClient.ucas | 9CACAF82EFBA159BEA31E22FE486374E | 3bc9a14e1bc7e78e9886d11277e192db77db8a0ee6ad793453321e561664e612 |