Looking to edit hosts file to block some annoying ad-senders sites but there is no HOSTS file in ordinary location (C:\Windows\System32\drivers\etc. Also not in mentioned C:\Windows\SysWOW64. I find same HOSTS file in: C:\Windows\Winsxs\amd64_microsoft-windows-w..nfrastructure-other_31bf3856ad364e35_6.1.7600.16385_none_6079f415110c0210\hosts But when I tryed to edit it (opened Notepad as administrator), can't save it. Also tryed to change permissions on HOSTS file but system don't allows that. How to do?