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Tabs opening on their own, attempting to connect to "About:xxyyzz"

  • 15 replies
  • 151 have this problem
  • Last reply by xPhaze

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Starting about a week ago, seemingly at random tabs will open on their own. They always try connecting to the URL mentioned in the title. Now, this obviously won't resolve because that isn't a valid URL. This only seems to happen when firefox is already open, and isn't affected by running firefox in safe mode. I've ran some scans and haven't found anything, I've been through my startup processes and nothing is amiss there either. I feel I should also mention that this is only happening in firefox, I've left Internet Explorer open for a few hours to see if anything would happen and nothing did. Funnily enough it's just happened in the time it's taken me to type all of this out. That's about all I can think to add. I hope someone can get to the bottom of this.

All Replies (15)

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The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: This will cause you to lose any Extensions and some Preferences.

  • Open websites will not be saved in Firefox versions lower than 25.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.

Further information can be found in the Refresh Firefox - reset add-ons and settings article.


Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

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This issue seems to have popped up for lots of people lately (including me). I'm assuming it's a bug in one of my plugins/extensions (probably debug code someone forgot to delete), as I can't imagine why malware would do this.

So, we need to narrow down which plugin is doing this. Everyone that has this issue, please post your plugins and extensions info here. You can find your extensions in "about:support" and plugins in "about:plugins"

Saving the about:plugins page doesn't seem to work, and the "attach file" on this forum appears to be broken, so I'll just paste my results here (sorry!):

Application Basics

Name: Firefox
Version: 29.0.1
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0

Crash Reports for the Last 3 Days

All Crash Reports


Name: Awesome screenshot: Capture and Annotate
Version: 2.4.3
Enabled: true
ID: jid0-GXjLLfbCoAx0LcltEdFrEkQdQPI@jetpack

Name: DownThemAll!
Version: 2.0.17
Enabled: true
ID: {DDC359D1-844A-42a7-9AA1-88A850A938A8}

Name: Enhanced Steam
Version: 6.1
Enabled: true
ID: jid0-SmvlvxGpvCyG252KbVMqIKR79Uc@jetpack

Name: FEBE
Enabled: true
ID: {4BBDD651-70CF-4821-84F8-2B918CF89CA3}

Name: FirePHP
Version: 0.7.4
Enabled: true

Name: Google Similar Images
Version: 0.5
Enabled: true

Name: Greasemonkey
Version: 1.15
Enabled: true
ID: {e4a8a97b-f2ed-450b-b12d-ee082ba24781}

Name: LastPass
Version: 3.1.1
Enabled: true

Name: Pocket
Version: 3.0.4
Enabled: true

Name: Shelve
Version: 1.34
Enabled: true

Name: SPDY indicator
Version: 2.1
Enabled: true

Name: Speed Dial [FVD] - New Tab Page, Sync...
Version: 5.3.1
Enabled: true

Name: Tree Style Tab
Version: 0.14.2014051101
Enabled: true

Name: Adblock Plus
Version: 2.6
Enabled: false
ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}

Name: Anti-Banner
Enabled: false

Name: Dangerous Websites Blocker
Enabled: false

Name: Firebug
Version: 1.12.8
Enabled: false

Name: Firebug Paint Events
Version: 0.1.8
Enabled: false

Name: Ghostery
Version: 5.3.0beta1
Enabled: false

Name: Kaspersky URL Advisor
Enabled: false

Name: NoScript
Enabled: false
ID: {73a6fe31-595d-460b-a920-fcc0f8843232}

Name: PrivacyChoice TrackerBlock
Version: 2.2
Enabled: false

Name: Safe Money
Enabled: false

Name: Virtual Keyboard
Enabled: false

Important Modified Preferences

accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.smart_size_cached_value: 358400
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.newtab.url: chrome://fvd.speeddial/content/fvd_about_blank.html
browser.places.smartBookmarksVersion: 6 chr-greentree_ff&ilc=12&type=714647 true
browser.sessionstore.upgradeBackup.latestBuildID: 20140506152807
browser.startup.homepage: about:home
browser.startup.homepage_override.buildID: 20140506152807
browser.startup.homepage_override.mstone: 29.0.1
browser.tabs.closeWindowWithLastTab: false
browser.tabs.insertRelatedAfterCurrent: false
browser.tabs.insertRelatedAfterCurrent.backup: true
browser.tabs.loadFolderAndReplace: false
browser.tabs.onTop: false
browser.tabs.warnOnClose: false
browser.urlbar.maxRichResults: 15
dom.mozApps.used: true
dom.send_after_paint_to_content: true
dom.w3c_touch_events.expose: false
extensions.lastAppVersion: 29.0.1
font.internaluseonly.changed: true
gfx.direct3d.last_used_feature_level_idx: 0
network.cookie.prefsMigrated: true
places.database.lastMaintenance: 1400372780
places.history.expiration.transient_current_max_pages: 104858
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
print.printer_EPSON0CB577_(WF-3520_Series).print_bgcolor: false
print.printer_EPSON0CB577_(WF-3520_Series).print_bgimages: false
print.printer_EPSON0CB577_(WF-3520_Series).print_downloadfonts: false
print.printer_EPSON0CB577_(WF-3520_Series).print_duplex: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_edge_bottom: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_edge_left: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_edge_right: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_edge_top: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_evenpages: true
print.printer_EPSON0CB577_(WF-3520_Series).print_footerleft: &PT
print.printer_EPSON0CB577_(WF-3520_Series).print_footerright: &D
print.printer_EPSON0CB577_(WF-3520_Series).print_headerleft: &T
print.printer_EPSON0CB577_(WF-3520_Series).print_headerright: &U
print.printer_EPSON0CB577_(WF-3520_Series).print_in_color: true
print.printer_EPSON0CB577_(WF-3520_Series).print_margin_bottom: 0.5
print.printer_EPSON0CB577_(WF-3520_Series).print_margin_left: 0.5
print.printer_EPSON0CB577_(WF-3520_Series).print_margin_right: 0.5
print.printer_EPSON0CB577_(WF-3520_Series).print_margin_top: 0.5
print.printer_EPSON0CB577_(WF-3520_Series).print_oddpages: true
print.printer_EPSON0CB577_(WF-3520_Series).print_orientation: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_page_delay: 50
print.printer_EPSON0CB577_(WF-3520_Series).print_paper_data: 1
print.printer_EPSON0CB577_(WF-3520_Series).print_paper_height: 11.00
print.printer_EPSON0CB577_(WF-3520_Series).print_paper_size_type: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_paper_size_unit: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_paper_width: 8.50
print.printer_EPSON0CB577_(WF-3520_Series).print_resolution: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_reversed: false
print.printer_EPSON0CB577_(WF-3520_Series).print_scaling: 1.00
print.printer_EPSON0CB577_(WF-3520_Series).print_shrink_to_fit: true
print.printer_EPSON0CB577_(WF-3520_Series).print_to_file: false
print.printer_EPSON0CB577_(WF-3520_Series).print_unwriteable_margin_bottom: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_unwriteable_margin_left: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_unwriteable_margin_right: 0
print.printer_EPSON0CB577_(WF-3520_Series).print_unwriteable_margin_top: 0
privacy.donottrackheader.enabled: true
privacy.sanitize.migrateFx3Prefs: true
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1398734977

user.js Preferences

Your profile folder contains a user.js file, which includes preferences that were not created by Firefox.


Adapter Description: NVIDIA GeForce GTX 760
Adapter Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Adapter RAM: 2048
Device ID: 0x1187
Direct2D Enabled: true
DirectWrite Enabled: true (6.2.9200.16571)
Driver Date: 3-4-2014
Driver Version:
GPU #2 Active: false
GPU Accelerated Windows: 1/1 Direct3D 10
Vendor ID: 0x10de
WebGL Renderer: Google Inc. -- ANGLE (NVIDIA GeForce GTX 760 Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote: false
AzureCanvasBackend: direct2d
AzureContentBackend: direct2d
AzureFallbackCanvasBackend: cairo
AzureSkiaAccelerated: 0


Incremental GC: true


Activated: false
Prevent Accessibility: 0

Library Versions

Expected minimum version: 4.10.3
Version in use: 4.10.3

Expected minimum version: 3.16 Basic ECC
Version in use: 3.16 Basic ECC

Expected minimum version: 3.16 Basic ECC
Version in use: 3.16 Basic ECC

Expected minimum version: 3.16 Basic ECC
Version in use: 3.16 Basic ECC

Expected minimum version: 3.16
Version in use: 3.16

Modified by cor-el

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Installed plugins Find updates for installed plugins at Shockwave Flash

   File: NPSWF32_13_0_0_214.dll
   Path: C:\Windows\SysWOW64\Macromed\Flash\NPSWF32_13_0_0_214.dll
   State: Enabled
   Shockwave Flash 13.0 r0

MIME Type Description Suffixes application/x-shockwave-flash Adobe Flash movie swf application/futuresplash FutureSplash movie spl Google Update

   File: npGoogleUpdate3.dll,npGoogleUpdate3.dll
   Path: C:\Program Files (x86)\Google\Update\\npGoogleUpdate3.dll,C:\Users\BlueRaja\AppData\Local\Google\Update\\npGoogleUpdate3.dll
   State: Enabled
   Google Update

MIME Type Description Suffixes application/ application/ application/ application/ Google Talk Plugin Video Renderer

   File: npo1d.dll
   Path: C:\Users\BlueRaja\AppData\Roaming\Mozilla\plugins\npo1d.dll
   State: Enabled

MIME Type Description Suffixes application/o1d Google Talk Plugin Video Renderer o1d Google Talk Plugin

   File: npgoogletalk.dll
   Path: C:\Users\BlueRaja\AppData\Roaming\Mozilla\plugins\npgoogletalk.dll
   State: Enabled

MIME Type Description Suffixes application/googletalk Google voice and video chat googletalk Silverlight Plug-In

   File: npctrl.dll
   Path: C:\Program Files (x86)\Microsoft Silverlight\5.1.30214.0\npctrl.dll
   Version: 5.1.30214.0
   State: Enabled

MIME Type Description Suffixes application/x-silverlight npctrl scr application/x-silverlight-2 VLC Web Plugin

   File: npvlc.dll
   Path: C:\Program Files (x86)\VideoLAN\VLC\npvlc.dll
   State: Enabled
   VLC media player Web Plugin 2.1.3

MIME Type Description Suffixes audio/mpeg MPEG audio mp2,mp3,mpga,mpega audio/x-mpeg MPEG audio mp2,mp3,mpga,mpega video/mpeg MPEG video mpg,mpeg,mpe video/x-mpeg MPEG video mpg,mpeg,mpe video/mpeg-system MPEG video mpg,mpeg,mpe,vob video/x-mpeg-system MPEG video mpg,mpeg,mpe,vob audio/mp4 MPEG-4 audio aac,mp4,mpg4 audio/x-m4a MPEG-4 audio m4a video/mp4 MPEG-4 video mp4,mpg4 application/mpeg4-iod MPEG-4 video mp4,mpg4 application/mpeg4-muxcodetable MPEG-4 video mp4,mpg4 video/x-m4v MPEG-4 video m4v video/x-msvideo AVI video avi application/ogg Ogg stream ogg video/ogg Ogg video ogv application/x-ogg Ogg stream ogg application/x-vlc-plugin VLC plug-in video/x-ms-asf-plugin Windows Media Video asf,asx video/x-ms-asf Windows Media Video asf,asx application/x-mplayer2 Windows Media video/x-ms-wmv Windows Media wmv video/x-ms-wvx Windows Media Video wvx audio/x-ms-wma Windows Media Audio wma application/x-google-vlc-plugin Google VLC plug-in audio/wav WAV audio wav audio/x-wav WAV audio wav audio/3gpp 3GPP audio 3gp,3gpp video/3gpp 3GPP video 3gp,3gpp audio/3gpp2 3GPP2 audio 3g2,3gpp2 video/3gpp2 3GPP2 video 3g2,3gpp2 video/divx DivX video divx video/flv FLV video flv video/x-flv FLV video flv application/x-matroska Matroska video mkv video/x-matroska Matroska video mkv audio/x-matroska Matroska audio mka application/xspf+xml Playlist xspf xspf audio/x-mpegurl MPEG audio m3u video/webm WebM video webm audio/webm WebM audio webm application/vnd.rn-realmedia Real Media File rm audio/x-realaudio Real Media Audio ra audio/amr AMR audio amr audio/x-flac FLAC audio flac Unity Player

   File: npUnity3D32.dll
   Path: C:\Users\BlueRaja\AppData\LocalLow\Unity\WebPlayer\loader\npUnity3D32.dll
   Unity Player 4.3.4f1

MIME Type Description Suffixes application/vnd.unity Unity Player datafile unity3d Battlelog Game Launcher

   File: npbattlelog.dll
   Path: C:\Program Files (x86)\Battlelog Web Plugins\2.3.2\npbattlelog.dll
   State: Enabled
   Battlelog Game Launcher (2.3.2)

MIME Type Description Suffixes application/x-battlelog-game-launcher-2.3.2 npbattlelog Java(TM) Platform SE 7 U45

   File: npjp2.dll
   Path: C:\Program Files (x86)\Java\jre7\bin\plugin2\npjp2.dll
   State: Enabled
   Next Generation Java Plug-in 10.45.2 for Mozilla browsers

MIME Type Description Suffixes application/x-java-applet Java Applet application/x-java-bean JavaBeans application/x-java-vm application/x-java-applet;version=1.1.1 application/x-java-bean;version=1.1.1 application/x-java-applet;version=1.1 application/x-java-bean;version=1.1 application/x-java-applet;version=1.2 application/x-java-bean;version=1.2 application/x-java-applet;version=1.1.3 application/x-java-bean;version=1.1.3 application/x-java-applet;version=1.1.2 application/x-java-bean;version=1.1.2 application/x-java-applet;version=1.3 application/x-java-bean;version=1.3 application/x-java-applet;version=1.2.2 application/x-java-bean;version=1.2.2 application/x-java-applet;version=1.2.1 application/x-java-bean;version=1.2.1 application/x-java-applet;version=1.3.1 application/x-java-bean;version=1.3.1 application/x-java-applet;version=1.4 application/x-java-bean;version=1.4 application/x-java-applet;version=1.4.1 application/x-java-bean;version=1.4.1 application/x-java-applet;version=1.4.2 application/x-java-bean;version=1.4.2 application/x-java-applet;version=1.5 application/x-java-bean;version=1.5 application/x-java-applet;version=1.6 application/x-java-bean;version=1.6 application/x-java-applet;version=1.7 application/x-java-bean;version=1.7 application/x-java-applet;jpi-version=1.7.0_45 application/x-java-bean;jpi-version=1.7.0_45 application/x-java-vm-npruntime application/x-java-applet;deploy=10.45.2 application/x-java-applet;javafx=2.2.45 Java Deployment Toolkit 7.0.450.18

   File: npdeployJava1.dll
   Path: C:\Program Files (x86)\Java\jre7\bin\dtplugin\npdeployJava1.dll
   NPRuntime Script Plug-in Library for Java(TM) Deploy

MIME Type Description Suffixes application/java-deployment-toolkit iTunes Application Detector

   File: npitunes.dll
   Path: C:\Program Files (x86)\iTunes\Mozilla Plugins\npitunes.dll
   State: Enabled
   iTunes Detector Plug-in

MIME Type Description Suffixes application/itunes-plugin This plug-in detects the presence of iTunes when opening iTunes Store URLs in a web page with Firefox. ESN Sonar API

   File: npesnsonar.dll
   Path: C:\Program Files (x86)\Battlelog Web Plugins\Sonar\0.70.4\npesnsonar.dll
   State: Enabled

MIME Type Description Suffixes application/mozilla-plugin-esn-sonar-0.70.4 esnsonar

more options and I share the same Google plugins, Adblock Plus, FEBE and Greasemonkey. So, if your assumption is right then I'd say it's one of those. Oh, I did all of what was suggested regarding the reset and such and I'm still getting them about once a day, so that hasn't fixed it.

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Let's also run down what programs we have in common during this issue. -Firefox (Netflix tab only) -Skype (Recently exited a call, also asked me to rate said call) -Technicpack (Minecraft modpacks) -Geforce Experience -Panda Cloud Antivirus

Addons are Noscript, adblock, out of date adobe/java, Ant Video Downloader.

Modified by Catbark

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Hello Catbark, good idea. The only programs I have open regularly that we both share are Firefox and Skype. Both were idle the last time this happened as I was making lunch in another room when it occurred.

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Whatever plugin was doing this, it appears to have been fixed.

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It could be the work of one of your add-ons, or even add / mal-ware. Look thru your add-ons list and make sure you know what each one is there for. Also, check the programs that are on your computer Windows > Start > Control Panel > Uninstall Programs. (Mac: Open the "Applications" folder) Go thru the list and use a web search to check any that you don't know what they are.

Troubleshoot Firefox Issues Caused By Malware {web link}

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I may have an idea if anyone is still interested; I was typing in Skype and an advertisement changed, then a window popped up (I pressed enter at the same time so it went away) "failed to connect to about:xxyyzz"

--Edit: Confirmed; it's the new advertisements in Skype that cause this issue. You can fix it by downloading a previous version of Skype (Whichever you prefer that doesn't have ad's).

Modified by Catbark

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ok yeah it seems to be the skype advertisements but what id like to know is if its just one of them or all of them? i think its just one of them as it only happens every now and then which would happen only if it had to cycle thru the ads till it got to that certain one which would cause the problem! so if it truely is just one ad then does anyone know which ad it is and has anyone contacted skype to let them know about this problem? id do it myself but i do not know which ad to let them know is causing problems!

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also to SWZT i think the reason its affecting firefox and not internet explorer is because firefox is set to be your default web browser correct? if so could you try setting internet explorer as your default web browser and wait a bit to see if it will open the tab in internet explorer or if it opens it in firefox?

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The problem appears to be an interaction between Firefox and Skype (and ActiveX). When I change my focus from Firefox (30.0) to Skype ( - of course it isn't happening now, but earlier, I would get the attached ActiveX pop-up message. Then, when I clicked OK, the pop-up would disappear, and the about tab you mentioned would open. Now that I think about it, Skype may not have anything to do with it. I'll post again if I figure out how to reproduce the error.

Has anyone else seen this ActiveX message?

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I believe it is the Domino's ads because anytime it is up when I start typing in chat it will pop up on me and continue to do so until it changes.

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yes im getting that too but not everytime and lately it hasnt been happening maybe someone let skype know and they fixed it?

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Just want to add that I am having the same thing happen. Did not even think of it before reading your comments, but mine occurs only when I have Skype open as well. I only have Skype open during calling sessions once a day and this pop-up occurs at least once a week.

This is also the first time that it took me to about:xxyyzz. Usually it takes me to random other websites that make me think that it's malware.

I am also not getting any kind of ActiveX message. I did however just get a popup saying that "Adobe Flashruntime" by "Adobe Systems Incorporated" wants to run, right as FF went to about:xxyyzz.