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2026
Fix ULTRAKILL (v17d4) startup crashes, permission errors, missing dependencies, and desktop configuration issues on Windows 10/11 PC & macOS Desktop via AnkerGames.
Quick Fix for ULTRAKILL Crashes & Launch Errors: Over 90% of startup crashes, missing DLL errors on Windows, and Gatekeeper prompts on macOS in ULTRAKILL (v17d4) 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/ULTRAKILL.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 ULTRAKILL (v17d4), check these default desktop directories:
| Desktop Platform | Default User Data / Config / Preset Directory | Backup & Migration Notes |
|---|---|---|
| Windows 10 / 11 (x64) | %APPDATA%\{ULTRAKILL}\ or %USERPROFILE%\AppData\LocalLow\{ULTRAKILL}\ | Back up this folder before installing a newer version or resetting preferences. |
| macOS (Apple Silicon M1–M4 / Intel) | ~/Library/Application Support/ULTRAKILL/ & ~/Library/Preferences/ | Use Cmd + Shift + G in Finder to open hidden Library paths directly. |
The version listed here is offered as a free pre-installed download at 3.4 GB. ULTRAKILL is a paid game on Steam, and the listing encourages supporting the developers by purchasing it there if you can.
Extract the pre-installed archive into an antivirus-excluded folder, install the necessary apps from the Redist or _CommonRedist folder, then run the game as administrator. A detailed Installation Guide.txt is included inside the game files.
You need a 64-bit Windows 10 system, a 2.4 GHz quad-core processor, 4 GB RAM, a GeForce GTX 460 or equivalent, DirectX 11, and 3 GB of available storage.
Yes. The build is v17d4 (build 22957324), matching the latest Steam build, and was updated on Apr 27, 2026.
There is no built-in mod browser, so mods require manual installation. Community comments frequently ask about this, and setup is done outside the game.
One reported cause is moving or renaming the extracted game folder after the first launch. Keep the folder in place once you start playing.
Step-by-step setup process
Minimum specifications needed
Pre-installed direct download links, no installer or license keys needed.
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