This site can’t be reached (xxx took too long to respond.)

Hi All,

  Anybody know why the Intercept X for laptop suddenly having above mentioned message?  Note: same day morning all of us still can access, using mobile able to access as well but not the device with Intercept  X.  Tries with https also same but not all web page like this (e.g.: no error on https://sg.yahoo.com/?p=us, Sophos Community  , https://www.webpagetest.org/, https://www.httpvshttps.com/ & many more)

  Note: i also not do any change/update in Sophos Central.

P/s: raised ticket to Sophos but only request me to check this do that... All are basic troubleshooting and not able to resolve it...