V 1.05
Game
Tom Clancy's Splinter Cell Chaos Theory
2026
Fix ATLYSS (v12026.a3) startup crashes, permission errors, missing dependencies, and desktop configuration issues on Windows 10/11 PC & macOS Desktop via AnkerGames.
Quick Fix for ATLYSS Crashes & Launch Errors: Over 90% of startup crashes, missing DLL errors on Windows, and Gatekeeper prompts on macOS in ATLYSS (v12026.a3) are resolved by installing vc_redist.x64.exe, whitelisting the folder in Windows Security (or running xattr -cr on Mac), and launching as Administrator.
| Issue / Error Message | Root Cause | Step-by-Step Fix |
|---|---|---|
| Crash on Startup / Silent Exit (Windows) | Missing Visual C++ Runtime or Admin privileges | Install VC++ 2015–2022 (x86 & x64) and enable Run this program as an administrator. |
| Missing MSVCP140.dll / VCRUNTIME140.dll | Corrupted Microsoft C++ runtime libraries | Reinstall the official Microsoft Visual C++ Redistributable package and reboot your PC. |
| Missing steam_api64.dll / Activation DLL | Windows Defender quarantined the offline loader | Open Windows Security → Protection History, restore the file, and whitelist the folder. |
| "App Is Damaged and Can't Be Opened" (macOS) | macOS Gatekeeper quarantine flag | Run sudo xattr -rd com.apple.quarantine "/Applications/ATLYSS.app" in Terminal. |
Related Guides: Main Download Page | Installation Guide | System Requirements
When backing up user profiles, presets, or local save data between a Windows Desktop workstation and a MacBook Pro/Studio for ATLYSS (v12026.a3), check these default desktop directories:
| Desktop Platform | Default User Data / Config / Preset Directory | Backup & Migration Notes |
|---|---|---|
| Windows 10 / 11 (x64) | %APPDATA%\{ATLYSS}\ or %USERPROFILE%\AppData\LocalLow\{ATLYSS}\ | Back up this folder before installing a newer version or resetting preferences. |
| macOS (Apple Silicon M1–M4 / Intel) | ~/Library/Application Support/ATLYSS/ & ~/Library/Preferences/ | Use Cmd + Shift + G in Finder to open hidden Library paths directly. |
The listing is marked as a free download. The game is also sold on Steam, and the listing notes that you can support the developers by purchasing it there.
Yes. This build ships with the online fix, so multiplayer and co-op work over the internet with friends running the same version. No separate patch is needed.
Yes. ATLYSS is built around net-play, but it can be played offline with no features or opportunities lost. Your progression is saved locally and carries between single-player and net-play sessions.
All character progression data is saved locally and is easily accessed within the game's data directory.
Windows 10 or higher on a 64-bit processor and OS, 2 GB RAM, DirectX version 10, a broadband internet connection, and 2 GB of available storage.
Some users report a launch error even when running as administrator. Install the apps from the Redist or _CommonRedist folder, extract the game into an antivirus-excluded folder, and run it as administrator.
Step-by-step setup process
Minimum specifications needed
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Pre-installed direct download links, no installer or license keys needed.
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