Yes, I get and error when the program tries to modify C:\Windows\System32\drivers\etc\hosts I am using “Local by Flywheel” and it works fine, it is a tools for creating and running WordPress sites locally and the publishing to their hosting platform. So they need to edit the hosts file when setting up new sites locally. This program works fine and I have not needed to anything to get it to work, Kaspersky does nothing. But Flywheel has recently released a new version in beta and that program is being blocked when it tries to add something in the hosts-file . So the stable version is grouped as “Trusted” and the beta is grouped in “Low restricted”, but even when I manually put it in “Trusted” I still get the “write block”. So what I had to do to get the beta working is to turn off program monitoring for that exe; “Do not monitor application activity”, in Program Rules/Exclusions Tab. This feels like a very temporary solution… What i really would like is to add a rule that allows the beta to edit the hosts-file, which feels like a better solution than turning off all monitoring for the program (a program that runs php-code from WordPress, plugins etc). I have found two differences, that may or may not affect the “write block” 3.3.0 - the stable working release https://whitelisting.kaspersky.com/advisor?lang=en-US#search/65649B07BA77BF632C21AA0BEC1BABC2 5.0.7 - the new beta https://whitelisting.kaspersky.com/advisor?lang=en-US#search/4A1A5AC0E20C56C3A008AE99D1D2FAD2