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Why despite 'Open new windows in a new tab instead' is set do I keep getting new windows opening?

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I have always had this set, but suddenly links have started opening in a new window [another Firefox browser opens], and despite checking open in new tab is set, it continues.

I have always had this set, but suddenly links have started opening in a new window [another Firefox browser opens], and despite checking open in new tab is set, it continues.
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Additional System Details

Installed Plug-ins

  • Adobe PDF Plug-In For Firefox and Netscape 11.0.10
  • Google Update
  • Intel web components for Intel® Identity Protection Technology
  • Intel web components updater - Installs and updates the Intel web components
  • DRM Store Netscape Plugin
  • DRM Netscape Network Object
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • RealDownloader Plugin
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealPlayer Download Plugin
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • Shockwave Flash 32.0 r0
  • Unity Player 5.2.3f1
  • Npdsplay dll
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers

Application

  • Firefox 52.9.0
  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0
  • Support URL: https://support.mozilla.org/1/firefox/52.9.0/WINNT/en-GB/

Extensions

  • Application Update Service Helper 2.0 (aushelper@mozilla.org)
  • Hotfix for Firefox bug 1548973 (armagaddon 2.0) mitigation 1.1.4 (hotfix-bug-1548973@mozilla.org)
  • Multi-process staged rollout 1.10 (e10srollout@mozilla.org)
  • Package 4.0.16 (@Package)
  • Pocket 1.0.5 (firefox@getpocket.com)
  • Web Compat 1.0 (webcompat@mozilla.org)
  • E-Web Print 1.23.00 (e-webprint@epson.com) (Inactive)
  • Microsoft .NET Framework Assistant 0.0.0 ({20a82645-c095-46ed-80e3-08825760534b}) (Inactive)
  • RealDownloader 1.3.4 ({1B12EF76-2B5E-4DA1-B587-4762D49BFE03}) (Inactive)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: Intel(R) HD Graphics
  • adapterDescription2:
  • adapterDeviceID: 0x0102
  • adapterDeviceID2:
  • adapterDrivers: igxprd32
  • adapterDrivers2:
  • adapterRAM: Unknown
  • adapterRAM2:
  • adapterSubsysID: 00000000
  • adapterSubsysID2:
  • adapterVendorID: 0x8086
  • adapterVendorID2:
  • crashGuards: []
  • currentAudioBackend: winmm
  • direct2DEnabled: False
  • direct2DEnabledMessage: [u'blockedDriver']
  • directWriteEnabled: False
  • directWriteVersion: 0.0.0.0
  • driverDate: 1-16-2012
  • driverDate2:
  • driverVersion: 6.14.10.5398
  • driverVersion2:
  • featureLog: {u'fallbacks': [], u'features': [{u'status': u'available', u'description': u'Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'HW_COMPOSITING'}, {u'status': u'unavailable', u'description': u'Direct3D11 Compositing', u'log': [{u'status': u'available', u'type': u'default'}, {u'status': u'unavailable', u'message': u'Direct3D11 not available on this computer', u'type': u'runtime'}], u'name': u'D3D11_COMPOSITING'}, {u'status': u'available', u'description': u'Direct3D9 Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D9_COMPOSITING'}, {u'status': u'unavailable', u'description': u'Direct2D', u'log': [{u'status': u'unavailable', u'message': u'Direct2D is not available on Windows XP', u'type': u'default'}], u'name': u'DIRECT2D'}, {u'status': u'disabled', u'description': u'Direct3D11 hardware ANGLE', u'log': [{u'status': u'available', u'type': u'default'}, {u'status': u'disabled', u'message': u'D3D11 compositing is disabled', u'type': u'env'}], u'name': u'D3D11_HW_ANGLE'}]}
  • info: {u'AzureCanvasAccelerated': 0, u'AzureCanvasBackend': u'skia', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'skia'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • supportsHardwareH264: No; Failed to create H264 decoder
  • webgl2Renderer: WebGL creation failed: * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Exhausted GL driver caps.
  • webglRenderer: WebGL creation failed: * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Error during ANGLE OpenGL init. * Exhausted GL driver caps.
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Direct3D 9

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
jscher2000
  • Top 10 Contributor
8568 solutions 70054 answers

Helpful Reply

Hi PetePassword, your Firefox identified itself as versoin 52 running on Windows XP. Is that correct, so the relevant settings would be the ones from back in the day?

There are three related settings to check:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste neww and pause while the list is filtered

(3) Review/Adjust the preferences as follows:

(A) browser.link.open_newwindow - for links in Firefox tabs

This is the one that has a checkbox on the Preferences page:

  • 3 = divert new window to a new tab (default)
  • 2 = allow link to open a new window
  • 1 = force new window into same tab

(B) browser.link.open_newwindow.restriction - for links in Firefox tabs

By default, if a page sets width, height, or toolbars for a popup, Firefox will let it be a separate window. To force those into a tab as well, you can change this preference to 0:

  • 0 = apply the setting under (A) to ALL new windows (even script windows with features) <= you might want to try this
  • 2 = apply the setting under (A) to normal windows, but NOT to script windows with features (default)
  • 1 = override the setting under (A) and always use new windows

(C) browser.link.open_newwindow.override.external - for links in other programs

  • -1 = apply the setting under (A) to external links (default)
  • 3 = open external links in a new tab in the last active window
  • 2 = open external links in a new window
  • 1 = open external links in the last active tab replacing the current page

To return to normal if things go haywire, right-click each "modified" preference and choose Reset.

Any improvement?

Hi PetePassword, your Firefox identified itself as versoin 52 running on Windows XP. Is that correct, so the relevant settings would be the ones from back in the day? There are three related settings to check: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk. (2) In the search box above the list, type or paste '''neww''' and pause while the list is filtered (3) Review/Adjust the preferences as follows: (A) '''browser.link.open_newwindow''' - ''for links in Firefox tabs'' This is the one that has a checkbox on the Preferences page: * '''3 = divert new window to a new tab (default)''' * 2 = allow link to open a new window * 1 = force new window into same tab (B) '''browser.link.open_newwindow.restriction''' - ''for links in Firefox tabs'' By default, if a page sets width, height, or toolbars for a popup, Firefox will let it be a separate window. To force those into a tab as well, you can change this preference to 0: * 0 = '''apply the setting under (A) to ALL new windows (even script windows with features) ''<= you might want to try this''''' * 2 = apply the setting under (A) to normal windows, but NOT to script windows with features (default) * 1 = override the setting under (A) and always use new windows (C) '''browser.link.open_newwindow.override.external''' - ''for links in other programs'' * -1 = apply the setting under (A) to external links (default) * 3 = open external links in a new tab in the last active window * 2 = open external links in a new window * 1 = open external links in the last active tab replacing the current page To return to normal if things go haywire, right-click each "modified" preference and choose Reset. Any improvement?
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jscher2000
  • Top 10 Contributor
8568 solutions 70054 answers

By the way, the extension list you shared includes something called "Package" which I don't think I've heard of before. Is that something useful you remember installing, or a possible bundleware item that snuck in and could be causing issues?

You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

  • Ctrl+Shift+a (Mac: Command+Shift+a)
  • "3-bar" menu button (or Tools menu) > Add-ons
  • type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions.

Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious or that you just do not remember installing or why? If in doubt, disable (or remove).

By the way, the extension list you shared includes something called "Package" which I don't think I've heard of before. Is that something useful you remember installing, or a possible bundleware item that snuck in and could be causing issues? You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either: * Ctrl+Shift+a (Mac: Command+Shift+a) * "3-bar" menu button (or Tools menu) > Add-ons * type or paste '''about:addons''' in the address bar and press Enter/Return In the left column of the Add-ons page, click Extensions. Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious or that you just do not remember installing or why? If in doubt, disable (or remove).
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Question owner

Excellent solution, precisely explained. Thanks very much indeed. Apologies for using something from the distant past, but I prefer stable XP with all the bugs removed to the juvenile animated versions that simply confuse and irritate!

Excellent solution, precisely explained. Thanks very much indeed. Apologies for using something from the distant past, but I prefer stable XP with all the bugs removed to the juvenile animated versions that simply confuse and irritate!
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