1. Login to your SolusVM Control Panel.
2. If you have multiple VPS, then select the appropriate one.
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3. Scroll down, under the "settings" tab you can find APIC, ACPI, VNC or PAE. If you want to turn off VNC, then select the "Off" option from the Drop-Down menu under the VNC option.
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4. After making any changes (on/off), reboot your VPS.