Unable to save the host file

Default location for hosts file is "C:\Windows\System32\drivers\etc"

While working on the installation of Blackberry Enterprise Server on Windows Server 2008 R2, i have encountered an issue where i am unable to modify the hosts file on the server.

While troubleshooting found that there is a local administrator account on the system and with the same name another account exists on the domain.

After deleting the local administrator account which is the duplicate of the account which exists on the domain, the issue is solved.

Finally i am able to modify and save the content on hosts file.