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Why do other websites think I am using Opera version 38 when I have FireFox version 65.0.1?

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  • Last reply by jhuller

jhuller
jhuller
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I am using FireFox v65.0.1 with the latest macOS Mojave. When I go to some websites, I get a message that my browser is outdated. If I go to whatismybrowser.com, I get the message that I am using Opera version 38. Why is my FireFox browser being misidentified.

I am using FireFox v65.0.1 with the latest macOS Mojave. When I go to some websites, I get a message that my browser is outdated. If I go to whatismybrowser.com, I get the message that I am using Opera version 38. Why is my FireFox browser being misidentified.
Capturas de pantalla anexas

Chosen solution

hi, your useragent (the information the browser sends to websites to identify its version) - apparently mistakenly - shows you're on opera. probably some sort of extension 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

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All Replies (3)

philipp
philipp
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Chosen Solution

hi, your useragent (the information the browser sends to websites to identify its version) - apparently mistakenly - shows you're on opera. probably some sort of extension 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

James
James
  • Top 25 Contributor
  • Moderator
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The User Agent you displayed to this site is Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36 OPR/38.0.2220.41

So either you have a User Agent related Extension installed or manually modified the UA or something else is sending this UA.

If the UA was modified in Firefox then see https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

jhuller
jhuller Question owner
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Yes, the process of resetting my default user agent worked. I had to reset some additional settings as well. There were two other "general useragent" fields in bold, one of which had a value of Opera. I reset them, and now my browser is correctly recognized. Thanks so much!!