I just changed the NS on a domain and
installed it in a hosting account.

There are 38 other sites hosted on this
account and all of the sites work just fine.

When I tried to log into the site, I get
Server Not Found.

I tried 4 different browsers on this PC
and get the same message..

Tried logging in on another computer
and it's the same.

Tried on a third computer and the site
shows up - NO error message and I can
log in.

I'm confused. I am using Kaspersky Internet
Security (for about a month now)

Any suggestions on how to fix this?

Windows 10/64