I had the same problem, it messed up my ZoneAlarm firewall. I was pointed to click here, by others on this forum, where a new version of the firewall could be found. I loaded that up and it is all working again.
Dell XPS 13 9370 (2018) review
The art of 'British' pulp fiction
Best password managers for Mac
TV & streaming : comment regarder le Tournoi des Six Nations 2018 ?