I have read multiple posts & articles about cannot reach ups.com website. Nothing others did works for me. I have re-installed Firefox, cleared caches, started in safe-mode, on & on ... etc. etc. etc. For the last week, FIREFOX has been slowly deteriorating & cannot reach various business websites: ups.com Hmm. We’re having trouble finding that site. foodlion.com 504 Gateway Time-out Microsoft-Azure-Application-Gateway/v2 I have run software to find malware & viruses, with no solution. I have NO TROUBLE using CHROME to access the same websites. Who has the magic answer?