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My antivirus or Windows Defender deleted engine.dll. What should I do?

Antivirus software may sometimes flag game .dll files as suspicious, especially after updates. This is usually a false positive.

To prevent this, add the Beyond Kalonline folder to your Windows Defender exclusions list.

How to add the folder to exclusions:

1. Open Windows Security.
2. Go to Virus & threat protection.
3. Click Manage settings.
4. Scroll to Exclusions → Add or remove exclusions.
5. Click Add an exclusion → choose Folder.
6. Select your Beyond Kalonline installation folder.

After adding the exclusion, restore the file from quarantine or re-extract the client.