Make sure you have all the programs listed in the download section installed.
Always check for updated Files in the Download Section.
Always open the Game with the Launcher.
Run the Game as Administrator (right click Launcher.exe > Run as Administrator).
Windows 10 Users Change the Compatibility Mode to Windows 7 (right click Launcher.exe > Properties > Compatibility > Compatibility Mode > Check Run this program in Compatibility mode for: > set to Windows 7) .
Add an Exclusion for the whole Ancient KalOnline Folder in your Antivirus Software .
Update all your Drivers (Mainboard Drivers, Graphics Card Drivers, etc…) .
Dont Place any dll in your client .
Dont Delete or replace any dll in your client .