My hosts file is locked by the system. Even telling my anti-virus (Zone Alarm) to take a break for 5 minutes doesn't let me edit the hosts file. The only way I can seem to edit it is using a registry entry to copy a new version over the old during the system boot.

I ran the Spybot Immunization and it did all sorts of work on my Firefox, MS Edge, Chrome etc. settings, but the hosts file stayed unchanged/unprotected. Even running Spybot as Administrator did nothing to the hosts file. Is there a way to run the Immunization at system boot so that my host file will get updated? Maybe update a second file, and copy that over the hosts file during boot? Any advise would be appreciated.