I have a MacBook Air 13", Mid 2011, Mac OS Sierra Ver 10.13.16. Mac Firewall is "ON", using Webroot Secure Anywhere, Since downloading and installing DropBox, we are unable to access many websites (banking/financial), conduct transactions on/for websites (Amazon.com, Walmart, Target,...).some websites will go partway through and lock up/not complete the transaction. Banking/financial websites will display "excessive redirects", "a problem repetedly occourred",.... Many other website do the samething,
as in this example screenshot (from my computer)
., I have uninstalled and rebooted computer numerous times without success of completing financial transactions, visiting websites. The issue is getting worse and appears to be migrating to other websites as well.
I contacted DropBox Support, had a online chat, with several of their techs, and they convey it is not a DropBox issue. Together, we uninstalled DropBox, reinstalled,... Reboot after reboot..... Screenshots were sent.
However, it started when DropBox was installed. Please help, Mike