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I'm using a 2017 MacBook Pro running OS 10.13.1 with Firefox Quantum 57.0. Most websites give me an error message that I'm running an old version of Firefox. Sites like Facebook & Twitter will only load partial versions without all features, other sites won't load at all.

I'm using a 2017 MacBook Pro running OS 10.13.1 with Firefox Quantum 57.0. Most websites give me an error message that I'm running an old version of Firefox. Sites like Facebook & Twitter will only load partial versions without all features, other sites won't load at all.

Yderligere systemdetaljer

Installerede plugins

  • Shockwave Flash 27.0 r0

Program

  • User Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 FBSMTWB

Yderligere information

Luk
philipp
  • Top 25 Contributor
  • Moderator
5330 løsninger 23532 svar

hi, your useragent (the information the browser sends to websites to identify its version) - apparently mistakenly - shows you're on firefox version 3.5. probably some sort of toolbar or adware has overwritten it. please see here in order to reset the user-agent settings in firefox and fix this problem: How to reset the default user agent on Firefox

hi, your useragent (the information the browser sends to websites to identify its version) - apparently mistakenly - shows you're on firefox version 3.5. probably some sort of toolbar or adware has overwritten it. please see here in order to reset the user-agent settings in firefox and fix this problem: [[How to reset the default user agent on Firefox]]