1. 🔥 Fixing Antivirus False Positive Issues
❌ Antivirus blocking the game?
- 🚫 Disable your antivirus before downloading the game client
- 🔄 Add the entire KO folder to antivirus exclusions
- 📁 KO-MyKO Game Folder (e.g., C:/Games/KO-MyKO)
- 📌 KnightOnline.exe
- ⚙️ Engine.acs
- 🚀 Launcher.exe
2. 🛑 Fixing Missing Server List (Corrupted KnightOnline.exe)
- 🚫 Disable antivirus
- 🔄 Re-extract the client from a fresh installation
- 🔒 Ensure KnightOnline.exe is not blocked
- 🔁 Restart the game
3. 🔄 Fixing OneDrive Auto-Disconnect Issue
- 📂 Move the client to C:/Games/KO-MyKO
- ⚠️ Make sure the folder is not syncing with OneDrive
- 🔁 Restart the game
4. 🚀 Fix Client "Stutter" & Lag
- 🎮 Press F10
- 📝 Find Font Size
- ⚙️ Set all values to 9 or 10
- 🔘 Toggle BOLD if needed
- ✅ Save settings
📌 Why?
- ✔️ Smaller fonts reduce UI rendering load
- ⚡ Large fonts cause FPS drops & lag
5. ⚡ Windows 11 FPS Boost (dx9 DXVK Vulkan - Experimental)
❌ Low FPS or stuttering on Windows 11?
- 🚀 Optional DXVK (Vulkan) rendering patch
- 🧪 Experimental feature
- 📂 If issues occur, remove the patch files from the client directory
- 🔁 Game will revert to default behavior automatically
👉
Download Windows 11 FPS Boost Patch
6. 🔧 Windows Defender Settings (FPS Boost for Windows 10 & Windows 11)
On Windows 11, a feature called Core Isolation → Memory Integrity
uses virtualization-based security (VBS).
While this improves security, it can cause
significant FPS loss, especially in:
- 🎮 Older game engines
- 🧩 DX9-based games
- 🛡️ Applications using low-level hooks
(anti-cheats, custom EXE files, overlays)
✅ How to Gain More FPS:
- Open Windows Security
- Go to Device Security → Core Isolation
- Set Memory Integrity → OFF
- Restart your PC
🖼️
Visual guide: How to disable Memory Integrity in Windows Defender
⚠️ Note: If you know what you install, this is not dangerous for gaming PCs.
Many gamers disable this feature on Windows 11 to increase FPS and reduce stuttering.