Before you make that trip, download and open another browser, Chrome and/or Firefox. See it those work fine. If so, and if you prefer Safari, delete all history and you should be good to go. Or online Apple help may do it, but there may well be a charge if your machine is elderly.My gimpy search engine won't open major portions of sites including pipe and tobacco retail sites I used to visit regularly. Being a hopeless non-techie, this means I must pack up my desktop in a rolling suitcase and haul it to the Apple Store.
Tried a different browser?MSO!!
Guessing you did not see the post (several before this one) regarding internet searches and not taking an unnecessary trip to the Apple store. Or did you? Try anything?