A while ago you can easily open __data files with Asset Studio GUI just fine, they'll automatically store all downloaded Avatars and Worlds in the Cache-Windowsplayer folder and they weren't encrypted until in the mid 2020s, they now encrypted them by implementing AES-GCM encryption and it's now impossible to open them. Is there a workaround to decrypt the __data files for them to load normally? Any feedback would be appreciated! Here's an example of it in question: https://drive.google.com/file/d/1aEBdYAR9dPR2cw_Rgi-Mg9qmLgELpJvO/view?usp=sharing

somebody tried to reverse engineer those files but fail in AnimeStudio's Issues (a fork of AssetStudio that supports encryption on some games)

https://github.com/Escartem/AnimeStudio/issues/32 (i know you're on there)

Edited December 20, 2025Dec 20 by Somwonere
fix

On 12/20/2025 at 4:41 AM, Somwonere said:

somebody tried to reverse engineer those files but fail in AnimeStudio's Issues (a fork of AssetStudio that supports encryption on some games)

https://github.com/Escartem/AnimeStudio/issues/32 (i know you're on there)

I know, but I desperately need someone to decrypt them since VRChat added that. The thread stays open until someone finds a workaround for it. I also have other samples of them I can send 🙂

Edited January 5Jan 5 by GabryTheSniper

Here are the full samples of them for prolonged research: https://www.mediafire.com/file/nujref9tavsmfsc/Cache-WindowsPlayer.rar/file

(The Cache files are dated from November to December 2025)

Edited January 5Jan 5 by GabryTheSniper

Any progress so far? Anyone?

Can we get a revival of this?