Active questions tagged firefox - Super User most recent 30 from 2018-07-22T14:57:38Z -1 Change Browser version and Resolution in Firefox or Chrome CuriousDev 2018-07-22T04:21:28Z 2018-07-22T07:16:53Z <p>Is there any way/addon to "automatically" change the browser size and user agent every time a new instance of Firefox/Chrome is opened?</p> <p>For example I want to test webpage on my machine and I want to see how it renders in Chrome/Firefox/IE Edge/Mobile browsers in different versions, and different browser sizes.</p> 1 Browser dialogs (Alert, Confirm, & Prompt) not longer working in Internet Explorer & Firefox on a specific Windows install scunliffe 2014-05-14T14:52:31Z 2018-07-22T04:06:07Z <p>I have a particular install of Windows 7 that will not display the standard JavaScript dialogs from web browsers.</p> <p>e.g. These all fail, regardless how they are called on any site.</p> <pre><code>javascript:alert('A message and an OK button'); javascript:confirm('A message and an OK &amp; Cancel button'); javascript:prompt('A message, an input box &amp; an OK &amp; Cancel button', 'Default'); </code></pre> <p>The code itself is correct and not the issue. It works just fine on any other Windows PC in any browser... as well as in Google Chrome on the affected machine (since Chrome renders it's own dialogs vs. depending on the Windows built in dialogs)</p> <p>My presumption is that there is a setting somewhere in Windows that is blocking or overriding the display of these dialogs - I just have no clue what it is or where it is.</p> <p><em>Although not related I should note that all of the browsers on this PC have their Popup Blocker (for browser window popups) turned off.</em></p> 4 Delay playing video opened in new Firefox tab until tab is selected (pre-Quantum) fixer1234 2018-07-21T21:17:12Z 2018-07-21T21:25:47Z <p>I have stuck with Firefox 52 ESR because I rely on some add-ons for which there aren't yet replacements in Quantum. I often spawn multiple tabs containing videos. These all start playing immediately in competition with each other, and I need to jump from tab to tab to pause each video, then go back and play each one individually. The problem has been fixed in Firefox Quantum, but still exists in the pre-Quantum versions. </p> <p>Note that this issue is different from stopping auto-play (for which there are already a number of questions and answers). Auto-play is fine, I just don't want it to start until I switch to the tab. </p> <p>For anyone else in this situation, I'll post an answer on how to solve this, although the thread's useful life will be limited because support will end for the pre-Quantum ESR version. </p> <p>My issue is the opposite of <a href="">this question</a>, which refers to undoing the "corrected behavior" in post-Quantum versions. The applicable parameter is the same, but the solution route in that answer is different, and users with my problem may not find that reverse question in a search. So I'll post the route and setting that I know works in pre-Quantum Firefox.</p> 0 How do I tell Firefox to stop asking me whether to open or save files [duplicate] bdesham 2018-07-21T18:51:24Z 2018-07-21T18:51:24Z <div class="question-status question-originals-of-duplicate"> <p>This question already has an answer here:</p> <ul> <li> <a href="/questions/192498/skipping-the-download-dialog-in-firefox" dir="ltr">Skipping the download dialog in Firefox</a> <span class="question-originals-answer-count"> 7 answers </span> </li> </ul> </div> <p>When I click a link to a file that Firefox cannot natively display, it gives me this dialog box:</p> <p><a href="" rel="nofollow noreferrer"><img src="" alt="Dialog box prompting the user to either save the file or choose an application to open it with"></a></p> <p>I <em>always</em> want to save files, not open them. I want that to happen every time and for every file type, without ever having to be prompted. How do I effect this behavior?</p> 1 Cannot open Firefox and Waterfox at the same time gotqn 2012-11-01T14:22:43Z 2018-07-21T14:32:31Z <p>I have a Windows 7 64 bit machine. I've installed <a href="" rel="nofollow noreferrer">Waterfox </a>, the 64 bit version of Firefox, as well as Firefox. </p> <p>When one of the browsers is open, and I click to open the other one, a new window opens in the already opened browser instead. I'm not able to open the two browsers at the same time.</p> <p>Does anyone know the reason and how to fix it?</p> 0 Firefox shows multiple PIN prompts for smartcard using OpenSC Coderer 2018-07-19T16:10:07Z 2018-07-21T12:52:15Z <p>I installed OpenSC 0.18 and added the PKCS11 DLL as a security device provider in Firefox 61. I can "unlock" my smart card from the Security Devices dialog, and get prompted for the PIN as expected. But, when I visit a site that wants to use the card for authentication, I get prompted for a PIN before even being asked to select a certificate. Then, I get prompted many more times (5-10) before the login process completes. Visiting the same site from a Linux box (using <code>coolkey</code> drivers) results in a single PIN prompt.</p> <p>I'm using the default config file for OpenSC, which I think means PIN caching should be enabled. I don't even know if this is a Firefox problem, OpenSC problem, or something specific to the site in question. How can I stop this excessive prompting?</p> 3 How to backup history in Firefox? 2080 2018-07-20T06:56:43Z 2018-07-20T15:31:44Z <p>Firefox currently has a history page limit. In <strong>about:config</strong>:</p> <pre><code>places.history.expiration.transient_current_max_pages: 10322 </code></pre> <p>I want to retain it completely. There are lot of useful information in that data. Is there a setting or extension that allows me to save old history automatically to my hard drive?</p> 0 Filter for uBlock megas 2018-07-20T11:18:16Z 2018-07-20T11:35:40Z <p>I'm using uBlock ad blocker on Firefox. Originally I have free filters such as:</p> <pre><code> </code></pre> <p>I assumed that all next pages will have similar id's. So I want to created a general filter so it can filter out the ads from every next pages, something like this:</p> <pre><code>* </code></pre> <p>But I can't figure out from <a href="" rel="nofollow noreferrer">uBlock's</a> documentation what is <a href="" rel="nofollow noreferrer">syntax</a> for this task.</p> <p>How to create filter for uBlock?</p> 1 How to merge 2 windows in Firefox M Farkas-Dyck 2018-07-19T22:38:59Z 2018-07-20T00:46:48Z <p>How can i merge 2 windows in Firefox Quantum, i.e. move all tabs of these 2 windows to 1 window?</p> <p>I have many Firefox windows open and want to merge 2 of them. So far Web searches merely turn up extensions like these (<a href="" rel="nofollow noreferrer">1</a>, <a href="" rel="nofollow noreferrer">2</a>) which seem to merge <strong>all</strong> windows. I have been looking at the <a href="" rel="nofollow noreferrer">API docs</a> but can't figure out how to use these functions from the script console (it says "ReferenceError: browser is not defined").</p> 0 Changing Proxy Port in Firefox CuriousDev 2018-07-19T13:03:50Z 2018-07-19T13:45:07Z <p>I often find myself going to Firefox > Options > General > Network Proxy > Settings > Manual Proxy Configuration and setting the port.</p> <p><strong>Option 1:</strong> Is there a way to increase the port number by one everytime I open Firefox. Eg: If the port is 2000, it becomes 2001 and so on.</p> <p><strong>Option 2:</strong> If option 1 addon or method does not exist, is there a way I can specify a list of proxy and ports that the addon can automatically pick up from?</p> 1 What happened to the old hamburger menu? Albert Tomanek 2018-07-18T08:31:56Z 2018-07-19T03:22:27Z <p>I remember pre-quantum Firefox having a hamburger menu with icons which you could customize:</p> <p><a href="" rel="nofollow noreferrer"> <img src="" height="300"></a></p> <p>However my current version of Firefox (60.0) seems to have lost it in favor of a more classic menu woth rows.</p> <p><a href="" rel="nofollow noreferrer"><img src="" height="300"/></a></p> <p>Was the old one removed with the coming of Firefox Quantum?<br> It seems like a step backwards. Is it possible to get it back somehow?</p> 0 Firefox html5 only 360p Wandang 2015-05-12T18:54:34Z 2018-07-19T00:33:24Z <p>This got fixed with the recent firefox patch 38.0.1!</p> <p>I already tried this <a href="">Only 360p on Youtube with HTML5</a> but it did not work. <img src="" alt="enter image description here"></p> <p>I also tried restoring default firefox (deleting all addons and setting settings to default) which did not help)</p> <p>edit: Dash seems to be not supported (h264 codec is set to always active)</p> <p><img src="" alt="enter image description here"></p> <p>Is there any other option I could try?</p> <p>System: Win 8.1 64bit Firefox 38.0</p> 1 Second monitor flashes static when viewing Netflix in Chrome or Firefox Astravagrant 2017-07-02T18:22:50Z 2018-07-18T17:40:38Z <p>NOTE: This happens in other HD-streaming apps, too, but it doesn't happen in the MS Edge browser.</p> <p>I have two identical Samsung 27D850T monitors, running at 60Hz connected on DisplayPort and HDMI respectively. This also happens when they are both on the DP ports (but I had some sleep-related powerup issues and it works better like this).</p> <p>After a few seconds (up to a minute or so) the secondary monitor will flicker and flash with static. As soon as I stop the stream (having to return to the browse page) the flickering stops immediately.</p> <p>This happens in Chrome and Firefox (latest).</p> <p>One thing I've noticed is that while Chrome and Firefox show the image when dragging the browser from monitor to monitor, Edge doesn't. It blanks out the image in the 'target' monitor until the whole browser has moved across. This makes me think it's something to do with HDCP.</p> <p>Any ideas what I can do about it? Are there some Chrome flags anyone knows about that might help with this? Can I disable HDCP or something?</p> <p>Cheers!</p> 0 Minimum tab width in Firefox Quantum radoh 2018-07-18T16:02:06Z 2018-07-18T16:02:06Z <p>Firefox Quantum changed the minimum width of Tabs, previous versions of Firefox had it set to a greater value.</p> <p>(*<em>minimum tab width</em> - when you have a lot of open tabs they shrink to some predefined minimum width).</p> <p>How do I increase this predefined minimum tab width?</p> 4 How long does chrome & firefox cache a file if no "expires" or "max-age" tag is set? skerit 2013-12-13T10:47:57Z 2018-07-18T14:04:59Z <p>I would like to know what the default max-age is of an image or css file, but can't seem to find it anywhere.</p> <p>Someone suggested it was only 300 seconds, but that doesn't seem to be correct.</p> 0 Call to same-domain API from React website throws 401 on Chrome and Edge, but works on IE and Firefox Spikee 2018-07-18T13:46:05Z 2018-07-18T13:46:05Z <p><strong>Background</strong></p> <p>I have a React website that posts a status update to an API on the backend, both are on the same server and domain.</p> <p>This POST is done using a wrapper function on top of fetch:</p> <pre><code>export function PostDirectly(url){ return fetch(url, { method: 'POST', headers: { Accept: 'application', 'Content-Type': 'application' } }) } </code></pre> <p><strong>Symptoms</strong></p> <p>All is fine on <code>Firefox</code> and <code>IE</code>.</p> <p>I get <code>401 (Unauthorized)</code> on <code>Chrome</code> and <code>Edge</code></p> <p>It looks like there's the most information to be found on Edge:</p> <p><a href="" rel="nofollow noreferrer"><img src="" alt="enter image description here"></a></p> <p>I <em>think</em> there's a difference in behavior on how to handle certain security settings amongst the browsers, but I have no idea where to look.</p> <p><strong>Some additional background</strong></p> <p>React UI Web Api 2 Basic logged-in user auth against the AD</p> <p>Neither UI or API require specific authentication, logged-in user credentials are fine.</p> <p><strong>Question</strong></p> <blockquote> <p>What can make, doing the same action on multiple browsers, throw a 401 error for Chrome and Edge, where it works exactly as planned on IE and firefox?</p> </blockquote> 0 How to determine which preference file lock a Firefox config option Quicky 2018-07-18T13:34:16Z 2018-07-18T13:34:16Z <p>On a Windows 7 computer, My Firefox network.proxy.type is locked so I cannot modify it When looking at <strong>C:\Program Files (x86)\Mozilla Firefox\default/prefs/localsettings.js</strong> there are only 2 lines:</p> <blockquote> <p>pref("general.config.obscure_value", 0);</p> <p>pref("general.config.filename", "config.cfg");</p> </blockquote> <p>Then when looking at config.cfg there is no line looking like</p> <blockquote> <p>lockPref("network.proxy.type", 5);</p> </blockquote> <p>and when I try to add my own preference with an other value</p> <blockquote> <p>pref("network.proxy.type", 2); I see in firefox that the preference is locked and don't take my value in account.</p> </blockquote> <p>I also looked inside about:support to determine my profile directory and looked in every .cfg and .js files but still no lockPref that could explain why network.proxy.type is locked</p> <p>Is there a way to know from which configuration file the lock is coming ? During my web search I found a lot of pages explaining how to lock some options etc but nothing on how to understand why an option is locked</p> <p>Thanks by advance for your help</p> 4 How to change link colors in Firefox and Chrome, but leave all other color and fonts as they are? Johannes 2013-08-29T14:29:14Z 2018-07-18T08:29:29Z <p>Some people who suffer <a href="" rel="nofollow noreferrer">protanomaly</a> can hardly distinguish red text from black text on computer screens. Many web pages like <a href=""></a> show visited and unvisited text links in red'ish colors. That reduces usability drastically for those affected.</p> <p>How do I change the color of un/visited text links of Firefox and Chrome on Windows and Linux to classic blue'ish colors, thus making the web usable for people who suffer protanomaly?</p> <p>The settings of Firefox and Chrome offer to override fonts and colors, e.g <em>Firefox</em> -> <em>Edit</em> -> <em>Preferences</em> -> <em>Content</em> -> <em>Colors...</em> -> untick <em>Allow pages to choose their own colors</em>. But that changes <em>all fonts and all colors of every element</em>. That's not desired; just the color of text links, no more no less. </p> 4 Can I keep firefox running in the background? vpzomtrrfrt 2015-10-23T19:05:12Z 2018-07-17T23:42:57Z <p>I'd like to keep Firefox running in the background for quick opening of new windows (on Lubuntu with i3). Is this possible by changing settings, installing extensions, etc.?</p> 4 I Need to Keep a Window Active JaneDoh 2018-07-17T11:22:08Z 2018-07-17T12:57:57Z <p>I need to keep a browser window active while I use another window. </p> <p>"Keep-on-Top" is not what I'm looking before because when I switch pages, it still goes inactive. </p> <p>I'm trying to keep a page from recognizing that I'm leaving the window (about a 10 second window before recognition). </p> <p>I stumbled across an AutoHotKey but I'm not savvy enough to use it:</p> <pre><code>SetTimer, constantActivation, 10 return constantActivation: WinWaitNotActive, your_window WinActivate, your_window return </code></pre> <p>Any advice or tips? Right now, I have my mouse set to make a page active just by hovering over, but that's not really going to cut it if I have to hover over the window every 9 seconds.</p> <p>For example, I'd like to browse in Firefox on the right while keeping Chrome active on the left:<br> <a href="" rel="nofollow noreferrer"><img src="" alt="enter image description here"></a></p> 1 Tiny (unreadable) apostrophes and double quotes on some web pages Jens 2018-07-15T20:31:25Z 2018-07-17T10:00:51Z <p>I'm using the latest firefox (Quantum 61.0) on a 4K display. Certain web pages are rendered incorrectly, in particular there's a problem with apostrophes and double quotes being so tiny as to be unreadable. One page this happens is this <a href="" rel="nofollow noreferrer">European Union</a> page.</p> <p>Search for "Parliament's". This is a screenshot how it is rendered on Firefox. <a href="" rel="nofollow noreferrer"><img src="" alt="enter image description here"></a></p> <p>Magnified with xmag:</p> <p><a href="" rel="nofollow noreferrer"><img src="" alt="enter image description here"></a></p> <p>If I had to guess, it looks like the regular font is rendered in 36 pixel height, while the apostrophe is about 12 pixels tall, but uses the same baseline.</p> <p>I'm using some non-standard values in about:config to have text readable on a 4K display, in particular <code>layout.css.devPixelsPerPx: 2.0</code> (default: 1.0) and <code>layout.css.dpi: 150;</code> (default: -1).</p> <p>Can anyone reproduce this? How can I have proper rendering of apostrophes and quotes?</p> <p><strong>EDIT</strong> The apostrophe is correctly rendered when I increase the font size (via FF Ctrl-+) to 140% or above. At these sizes, the font is also anti-aliased instead of rasterized as demonstrated in this xmag close-up:</p> <p><a href="" rel="nofollow noreferrer"><img src="" alt="enter image description here"></a></p> 2 How to sychronize bookmarks with Microsoft Edge? Michael S. 2015-08-09T08:01:12Z 2018-07-17T09:04:35Z <p>Currently I am using <a href="" rel="nofollow noreferrer">XMarks</a> to sync all my bookmarks between work and home and also the browsers Chrome, Firefox and Internet Explorer. This works as intended. Now I want to start using Edge. I can import from Internet Explorer and have my favorites now in Edge. But when I add a new favorite to Edge this will not be synced back to the other browsers. Any solution for this?</p> 5 Websites not loading correctly since Windows 8.1 upgrade David Gard 2014-02-19T11:16:28Z 2018-07-17T04:04:21Z <p>I finally upgraded my work PC to Window's 8.1 Pro on Monday (from 8 Pro), but since then I have been having problems with websites not loading correctly. This issue is occurring in both Firefox 27.0.1 and IE11.</p> <p>The website I'm trying to view does usually partially load but will not completely load. The spinner in the tab shows there is activity and clicking links does not work. In Firefox I see at the bottom the page <code>Transferring data for</code> (IE doesn't show this though).</p> <p>I use Firebug so have investigated the issue in Firefox with that, and it seems one of two things is happening -</p> <ol> <li>Not all scripts/styles are loading and never do.</li> <li>All of scripts/styles/image/etc are loading but the HTML Response for the page I'm trying to view is truncated, with only a portion of the page making it to the browser.</li> </ol> <p>I initially tried the obvious things -</p> <ul> <li>Firefox -> History -> Clear Recent History... <ul> <li>Browsing and Download History</li> <li>Form &amp; Search History</li> <li>Cookies</li> <li>Cache</li> <li>Active Logins</li> </ul></li> <li>Internet Explorer -> Tools -> Internet options -> (General) -> Delete... <ul> <li>Temporary Internet files and website files</li> <li>Cookies and website data</li> <li>History</li> </ul></li> <li>Disable all anti-virus</li> </ul> <p>This didn't work so I tried reinstalling Firefox (and uninstalling IE11 entirely), but that also didn't work.</p> <p>This is in a corporate environment where PFSense is used to manage the leased line connection that is being used, so there is no router in play that could be causing a problem. Besides, every other PC is connecting to these websites just fine (this is the only Windows 8/8.1 machine in the business).</p> <p>I'm also fairly certain that it cannot be the network card as I have been successfully connected to several Terminal Servers since the upgrade without issue.</p> <p>I'm now at a for what could be causing this, so I'd be grateful for any suggestions. Thanks.</p> 3 How to copy a link in Firefox with a plain text decoded format to past it in Notepad [duplicate] P. Kod 2017-05-21T22:58:20Z 2018-07-16T23:42:26Z <div class="question-status question-originals-of-duplicate"> <p>This question already has an answer here:</p> <ul> <li> <a href="/questions/480692/copying-unicode-symbols-from-firefox-address-bar-as-is" dir="ltr">Copying unicode symbols from Firefox address bar as is</a> <span class="question-originals-answer-count"> 6 answers </span> </li> </ul> </div> <p>Every time I try to copy a link location in Firefox and then past it in Notepad I get the encoded web adresses with numbers instead of characters, I searched a little for this problem, people seems have found a way to force Firefox to bypass the encoding by doing this:</p> <pre><code>network.standard-url.escape-utf8: true </code></pre> <p>But the problem I don't find this setting in about:config, the only result I get when i write network.standard-url in about:config page is this: </p> <p><a href="" rel="nofollow noreferrer"><img src="" alt="image"></a></p> <p>So how can I copy/past decoded data in Firefox newest versions?</p> <p><strong>Edit: I have found the solution in another post, the setting in about:config changed and was replaced by another one:</strong> </p> <pre><code>browser.urlbar.decodeURLsOnCopy;false </code></pre> <p>Change <code>false</code> to <code>true</code> and you will be able to copy/paste encoded links in Firefox without being forced to use a decoder.</p> 0 Getting back to content pane from address bar in Firefox Devin 2018-07-16T15:33:20Z 2018-07-16T15:33:20Z <p>When browsing a page in Firefox I can easily go to the address bar using <kbd>Cmd</kbd> + <kbd>L</kbd>. Is there a hotkey to leave the address bar and get back to the page?</p> 1 Firefox GCLI (internal command line) won't open TRiG 2018-07-16T09:48:13Z 2018-07-16T10:11:55Z <p>I’m used to pressing <kbd>Ctrl</kbd>+<kbd>F2</kbd> to open the <a href="" rel="nofollow noreferrer">graphical command-line interpreter</a> in Firefox. This is useful for <a href="">taking screenshots of webpages</a> and for restarting the browser when I’ve opened a ridiculous number of tabs. (I love the way Firefox doesn’t load tabs till you visit them: allows me to middle click and open 500 tabs, then restart the browser and visit them one at a time without running out of memory.)</p> <p>Ever since the update to Firefox Quantum, however, the toolbar has become inconsistent. Sometimes it opens, and sometimes nothing happens.</p> <p>At the moment, it still exists in the menu (Web Developer → Developer Toolbar) and is ticked, but I’m not seeing it. Unticking and reticking has no apparent effect. Nor does the keyboard shortcut.</p> <p>The weird bit is that some days it works fine, and some days it just doesn’t exist. I’m running Firefox on Ubuntu.</p> <blockquote> <p>Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0</p> </blockquote> 0 .tabbrowser-tab[unread], background-image: linear-gradient not working in userChrome.css g3blv 2018-07-14T08:31:08Z 2018-07-15T12:07:44Z <p>I had this working before but now it stopped working. I have some code in my <code>userChrome.css</code> to create a small grey triangle in the top right corner of an unread tab.</p> <pre><code>/* Mark new and unread tabs */ .tabbrowser-tab[unread] { font-style: italic; background-image: linear-gradient(-135deg, rgba(100, 100, 100, 0.6) 10px, transparent 0); } .tabbrowser-tab[busy] { font-style: italic; } .tabbrowser-tab[pending] { font-style: italic; } .tabbrowser-tab:not([pinned]) { min-width: 10px !important; } /* Move Find Bar above the page */ .browserContainer &gt; findbar { -moz-box-ordinal-group: 0; } </code></pre> <p>It is the first part <code>.tabbrowser-tab[unread]</code> that is not working. Is there something wrong in my <code>css</code>code?</p> <p>I'm running Firefox 61.0.1 64-bit on Ubuntu. </p> 0 Firefox Video format or mime type is not supported Sanjay Manohar 2017-08-08T22:01:47Z 2018-07-15T03:54:54Z <p>I want to open <code>.mov</code> files from Firefox in VLC. </p> <p>On my <code>Options/Applications</code> there is no item in the list for <code>mov</code> or video. </p> <p>The firefox help says "click on the mov file and select the application". When I click on a <code>.mov</code> file, it goes straight to a grey screen with a video icon, and the message: <code>Video format or mime type is not supported</code>. Firefox does <strong>not</strong> ask what to do with it, even though everything in <code>settings/applications</code> is set to <code>always ask</code>. In <code>options/general/downloads</code>, I have checked <code>Always ask you where to save files</code>. If I right-click a <code>.mov</code> and use <code>save link as...</code>, I can save the file and open it in VLC, no problem.</p> <p>I'm using Windows 7, if that matters. In the firefox console, I see </p> <pre><code>Media resource http://.../ could not be decoded. </code></pre> <p>And if this is relevant, the server header is <code>Content-Type: "video/quicktime"</code></p> 1 Changing HTML5 videos playback speed Mark Messa 2018-07-13T04:33:41Z 2018-07-14T16:01:47Z <p>In Firefox you can control the playback speed of HTML5 videos by pressing <kbd>F12</kbd> and typing the following in the console:</p> <pre><code>document.getElementsByTagName("video")[0].playbackRate = 1 </code></pre> <p>Although this method is reasonably general (up to 4x with audio and up to 16x(?) without audio), it is somewhat cumbersome to do manually. It would be nice to have a shortcut and, moreover, a way to set a default value for all playbacks.</p> <p>There are a couple of Firefox add-ons that seems to solve these issues (i.e. shortcut and default value): </p> <ul> <li><a href="" rel="nofollow noreferrer">Video Speed Controller</a> </li> <li><a href="" rel="nofollow noreferrer">Playback speed</a></li> <li><a href="" rel="nofollow noreferrer">Video Speed Changer</a></li> <li><a href="" rel="nofollow noreferrer">Faster Video</a></li> </ul> <p>However, <a href="" rel="nofollow noreferrer">according to Wikipedia</a>, there are some security risks associated with add-ons. </p> <p><strong>Questions</strong> </p> <ol> <li>Is it possible to solve the aforementioned issues without add-ons? </li> <li>Are these add-ons safe? </li> </ol> 0 Linux Mint 18 upgrade breakes firefox and chromium? Needs vbox? AXE-Labs 2018-07-14T14:59:09Z 2018-07-14T15:17:10Z <p>I've updated my firefox to latest version with apt on Linux Mint 18 Sarah. It now won't launch the browser gui. Starting from the terminal and using safe mode does not show any errors. Process exits with 1. Same for chromium-browser. Strace shows an attempt to open /dev/vboxuser before terminating. There is no such file nor do I have virtual box. What gives?</p> <p>PS Midori browser runs fine :|<img src="" alt="enter image description here"></p>