Firefox, Chrome & Opera won't load web pages after Catalina installation
Yesterday I installed Catalina 10.5.3 on a MacBookPro. Following installation, only Safari will load web pages. Firefox V 73.0, Chrome 80.0.3987.100 and Opera 66.0.3515.72 don't work. After waiting 5 minutes (timed on my iPhone) for Firefox to load the Wall Street Journal, I closed the brower. I can type a site into the Chrome search bar, but Chrome won't respond. Opera loads partial webpages only.
What's the fix? I've tried starting in safe mode, but I can't see an issue.