If you need to change your VPS Servers vnc password You can change the VNC password using SolusVM.
1. Login to your SolusVM Control Panel.
To change the VNC password
2. If you have multiple VPS Server, select the appropriate one.
3. Scroll down, and under the “VNC Password” tab, enter your new password in the VNC text box. Then click on “Change”.
4. It will prompt for a confirmation. Click “Yes” and then reboot your VPS.
To change the VNC password in solus VM
You can find one month free Linux Servers Support here