Rename a SharePoint Server machine name

Follow below procedure to rename the existing MOSS server

• Change each alternate access mapping for your MOSS/WSS deployment in Central Administration: Browse to Central Admin > Operation > Alternate Access Mappings and change each link to new server name
• Use following STSADM command to rename server

stsadm -o renameserver -newservername -oldservername

• Now rename the machine / server on which you hosted SharePoint by right click on My Computer > Properties > Computer Name > Change
• Then reboot the server
• After reboot, open command prompt and run following command

stsadm -o updatefarmcredentials -userlogin -password -iisreset /noforce

• Check all application pool identities in IIS and update if old machine name is still there.
• If you already have a search index drops this, and rebuild it.
• That’s it, Your server is now renamed.