I has a website hosted on CentOS VPS. That website has a self signed certificate. 

Now,I migrated that site to another host. I generated keys for using sftp and ssh in old hosting. 

The problem is that now I am unable to access the site from ubuntu. Whereas it is accessible from other computers. 

I tried various browsers (firefox, google-chrome, chromium) but I cant open the site. Deleting the cache also didn't change things.

Any clue?

This is what happens in chromium:

![enter image description here](https://i.stack.imgur.com/ikkOF.png)

**UPDATE:** 
I ran `ssh-keygen -R hostname` that didn't help. Finally I deleted known\_hosts file as well, still not working.

Uninstalling and re-installing the browser didn't solve the issue.

Logging out as guest user also didn't open the page.