This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

since upgrade to fireox 25 each time I open firefox a see briefly the following message "Reverted Change.....on general useragent override." what does this mean

  • 2 பதிலளிப்புகள்
  • 1 இந்த பிரச்சனை உள்ளது
  • 3 views
  • Last reply by weg43

Hi all, since upgrading to Firefox 25 each time I boot Firefox I see briefly the following in a small window whilst it is opening. "Reverted change ..... on general useragent override." What does this mean and if it is a problem how is it rectified? I see the same message on Windows 7 64 bit and 2 LInux Distros. Thanks for any explanation.

Hi all, since upgrading to Firefox 25 each time I boot Firefox I see briefly the following in a small window whilst it is opening. "Reverted change ..... on general useragent override." What does this mean and if it is a problem how is it rectified? I see the same message on Windows 7 64 bit and 2 LInux Distros. Thanks for any explanation.

தீர்வு தேர்ந்தெடுக்கப்பட்டது

cor-el, thank you for your prompt reply. I removed Extension User Agent Switcher and rebooted Firefox several times still getting the message showing as in first post. I then went on to your link and reset the general.useragent.override still without effect but I noticed that there was also 2 references to Extension Preference Monitor which I then disabled which resulted in the window showing "Reverted change ..... on general useragent override." no longer appearing on starting Firefox. So it appears the latter extension Vers.3.4.3 was the culprit. Thank you for pointing me to the solution. Your help is much appreciated, weg43.

Read this answer in context 👍 0

All Replies (2)

This message is probably coming from the User Agent Switcher extension that detects that you have a user agent override active as you can see in the System Details List.

  • general.useragent.override: Mozilla/5.0 (masking-agent; rv:25.0) Gecko/20100101 Firefox/25.0

See also:

தீர்வு தேர்ந்தெடுக்கப்பட்டது

cor-el, thank you for your prompt reply. I removed Extension User Agent Switcher and rebooted Firefox several times still getting the message showing as in first post. I then went on to your link and reset the general.useragent.override still without effect but I noticed that there was also 2 references to Extension Preference Monitor which I then disabled which resulted in the window showing "Reverted change ..... on general useragent override." no longer appearing on starting Firefox. So it appears the latter extension Vers.3.4.3 was the culprit. Thank you for pointing me to the solution. Your help is much appreciated, weg43.