If you are a software developer who needs to parse user agents in your system, please check out our User Agent Parsing API. You have now changed (or reset!) your user agent string in Firefox. Once you have found the preference that is overriding your user agent, get rid of it by clicking the Trash Can icon next to it.įirefox will resume using its default user agent. To do remove that preference, search again for the preference in the "about:config" window. The executable is actually an installer for Mozilla Firefox 5.0.1 with a. You can simply close the Advanced Preferences tab and resume browsing the internet.įirefox will continue to use this user agent you've set until you delete the preference you've created. Security researchers from Sophos warn of fake emails purporting to be Firefox update notifications and directing. You can test out your new user agent by visiting our My Browser page and setting what we detect it as! When you've done that, simple press the Enter button on your keyboard to save the new valueĬongratulations, you have just set a custom user agent for Firefox. You will then see an input box, where you can type or paste a new user agent (You could choose one from our list of user agents!) Into the search box at the top of the Preferences tab.įrom the three choices: Boolean, Number, and String, select String and then press the button The random name of the websites alone should raise a flag that it was not legit. The fake firefox-patch.exe and firefox-patch.js files can install things like trojans, viruses, unwanted software or to download additional stuff onto Windows based on past reports if the user runs them. Type the preference name that stores the custom user agent string: This is not from Mozilla or the Firefox web browser. I have had multiple crashes on multiple web sites in the past few weeks so I was tempted to install this patch but then thought I better check it out first. The setting to change your user agent doesn't exist in a default installation of Firefox you need to create it yourself and then set it to the new user agent value you want to use. This download appeared today and I have downloaded it but not installed it as I am worried it may be maleware. Firefox will normally give you a warning about this to make you aware of it.Īs long as you follow the instructions here, you should be fine.įirefox's settings are stored as a series of Preference Names and Values. The "about:config" system will give you access to change special settings which might make your Firefox unusable or behave strangely. In the address bar, type in about:config and press the Enter button on your keyboard. While Firefox has a standard settings interface for changing common settings, the interface for changing advanced settings such as the user agent in Firefox is done via the browser itself. The random name of the websites alone should raise a flag that it was not legit.Changing your user agent in Firefox takes a few simple steps. James said This is not from Mozilla or the Firefox web browser. '''This is not from Mozilla or the Firefox web browser'''. Read this answer in context □ 1 All Replies (5) Įven if you were to download this firefox-patch.js file it is not a risk unless you were to try and run it. Unfortunately this has gone on for a while now with one or two new sites reported every so often though not as much in last couple weeks. mar type of file) whether on Windows, Mac OSX or Linux (since Firefox 1.5 almost eleven years ago) or by download from like say You could try using a adblocker extension like uBlock Origin to block theses fake ads if you keep getting them. The Firefox updates have not changed as they are done internally in Firefox (with a. This is not from Mozilla or the Firefox web browser.
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