ArcGIS server does not recognize the host name when I change the computer name

Discussion created by naym on Dec 9, 2012
Latest reply on Jan 3, 2013 by mlou1

I installed ArcGIS 10.1 for Server. After that I needed to change the host name. But after changing when
I tried to join a site then a error message shows with the previous name(cannot find the old name local server)
Then I uninstall the server and re-install it. Still it says cannot find the local server with the old name. I dont know
where its getting the old name.

Can someone tell me what to do...