While opening Plesk if you get an error "Your connection is not private" then follow below steps:
For Internet Explorer :
- Click "Continue to this WebSite".
- Popup comes "Content from this website is being blocked by Internet Explorer"
- Click "Add" button.
For Mozilla :
It will give you the error "Secure Connection Failed"
- Click on the link "Or you can add an exception".
- Click button "Add Exception".
- Get the Certificate.
- Confirm Security Exception.
For Chrome :
- Go to "Advanced".
- Click "Proceed to".