Just got back from a work trip to Egypt and now my MacBook Air won’t connect (with Chrome browser) to most webpages (inc. STW!). A technician fiddled with it to try and get it to to connect it an organisation’s WiFi, but I can’t seen anything obvious in settings. Any suggestions? 😕

I’m assuming your machine actually connect to the network? If so, try clearing Chrome’s history/cache.

Yep, connects to the internet and I can receive some web info (such as work email, Twitter and Google searches), but not the vast majority of webpages. I tried deleting browser history/cache to no avail.

Do other browsers work i.e. Safari? or is it just Chrome?

Just tried Safari – nothing there either

http://apple.stackexchange.com/questions/98698/cant-access-specific-websites-with-macbook-air-10-7-5-lion

Does this help?

Have you checked the DNS settings.

If that is error 504 gateway timeout doesnt that mean a server along the line didnt respond. Have they changed any dns settings on your macbook?

It certainly sounds like a DNS config problem

Hmm, the laptop is configured by my work IT department so I can’t flush the cache through Terminal. Looks like I’ll have to take it in. Thanks all for help with identifying likely culprit.