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Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

6 REPLIES
Site Moderator

Re: Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

Also amended title to append [solved -protected mode]

Site Moderator

Re: Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

If we are to move it i think the advanced troubleshooting is a better location so moving it there.

Sometimes as in this case our KB advice of downgrading / upgrading does not help, but the turning off protected mode does. IIRC some instalers leave protected mode alone and some alter it.

Support Forum Moderator

Re: Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

Hi Harm,
I'm glad you got your problem solved. I think you may have mistaken this forum as a place to get help using Firefox. It is not. This forum is for discussion about contributing to support.mozilla.org.

If you have a problem with Firefox that you need help with, the best place to ask is in the support forum at http://support.mozilla.org/en-US/questions/new

Others might see this thread, and get the impression that this forum is a place to ask for help, so I'm going to move this thread to the Lost Threads forum.

New Contributor

Re: Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

John99 said

Try disabling the Adobe Flash Players protected mode.

That was the solution. Thanks so much!!!

Site Moderator

Re: Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

I did consider moving this post to the other forum Support Forum Contributors - Advanced Firefox Troubleshooting but as this may well be a top issue with Firefox 18 and Windows exposure in the main forum could be beneficial.

Site Moderator

Re: Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

Try disabling the Adobe Flash Players protected mode.

I have not been too active on the forums for a few weeks but looking at the Mozilla kb articles it seems current official advice may now be to downgrade to earlier versions of Flash,something that is not working for you. Although I suspect disabling protected mode is the better solution. On some systems it may be necessary to disable Hardware Acceleration &/or update graphics drivers.

There is

Flash 11.3 issues (was: flash 11.3 released)
New Contributor

Flash Player hangs Firefox 18 on Win8 64 [solved - protected mode]

Running Win8-64 Enterprise and Firefox 18. Some sites request installation of the Adobe Flash plug-in. If you agree and install Flash Player, Firefox becomes unresponsive and hangs. I have tried the suggested 10.x install of Flash Player, but that does not help either. The only way to get Firefox back into operation is to kill the Firefox process tree, uninstall the Flash Player pug-in and restart Firefox. I have reset Firefox, but that does not help either, I have tried disabling all installed plug-ins, but that again does not help.

Nothing seems to be able to install Flash Player without hanging Firefox. IE has no such problems. Here is some debug info:

 Application Basics
       Name
       Firefox
       Version
       18.0
       User Agent
       Mozilla/5.0 (Windows NT 6.2; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
       Build Configuration
         about:buildconfig
 Extensions
       Name
       Version
       Enabled
       ID
       British English Dictionary
       1.19.1
       true
       en-GB@dictionaries.addons.mozilla.org
       Dictionary Switcher
       1.3.2
       true
       dictionary-switcher@design-noir.de
       Firebug
       1.11.1
       true
       firebug@software.joehewitt.com
       Woordenboek Nederlands
       3.1.0
       true
       nl-NL@dictionaries.addons.mozilla.org
       Adobe Acrobat - Create PDF
       1.1
       false
       web2pdfextension@web2pdf.adobedotcom
       Browser Manager
       2.3.787.43
       false
       {b64982b1-d112-42b5-b1e4-d3867c4533f8}
       Logitech SetPoint
       6.5
       false
       {F003DA68-8256-4b37-A6C4-350FA04494DF}
 Important Modified Preferences
     Name
     Value
       browser.cache.disk.capacity
       358400
       browser.cache.disk.smart_size.first_run
       false
       browser.cache.disk.smart_size.use_old_max
       false
       browser.cache.disk.smart_size_cached_value
       358400
       browser.places.smartBookmarksVersion
       4
       browser.startup.homepage
       http://tweakers.net/|http://forums.adobe.com/community/premiere/premierepro_current?view=discussions|http://forums.adobe
       browser.startup.homepage_override.buildID
       20130104151925
       browser.startup.homepage_override.mstone
       18.0
       dom.mozApps.used
       true
       extensions.lastAppVersion
       18.0
       font.name.serif.x-western
       Myriad Pro
       gfx.direct3d.prefer_10_1
       true
       network.cookie.prefsMigrated
       true
       places.history.expiration.transient_current_max_pages
       104858
       privacy.sanitize.migrateFx3Prefs
       true
 Graphics
       Adapter Description
       NVIDIA GeForce GTX 680
       Adapter Drivers
       nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
       Adapter RAM
       4095
       Device ID
       0x1180
       Direct2D Enabled
       true
       DirectWrite Enabled
       true (6.2.9200.16433)
       Driver Date
       12-29-2012
       Driver Version
       9.18.13.1090
       GPU #2 Active
       false
       GPU Accelerated Windows
       1/1 Direct3D 10
       Vendor ID
       0x10de
       WebGL Renderer
       Google Inc. -- ANGLE (NVIDIA GeForce GTX 680)
       AzureCanvasBackend
       direct2d
       AzureContentBackend
       direct2d
       AzureFallbackCanvasBackend
       cairo
 JavaScript
       Incremental GC
       true
 Accessibility
       Activated
       false
       Prevent Accessibility
       0
 Library Versions
       Expected minimum version
       Version in use
       NSPR
       4.9.4
       4.9.4
       NSS
       3.14.1.0 Basic ECC
       3.14.1.0 Basic ECC
       NSSSMIME
       3.14.1.0 Basic ECC
       3.14.1.0 Basic ECC
       NSSSSL
       3.14.1.0 Basic ECC
       3.14.1.0 Basic ECC
       NSSUTIL
       3.14.1.0
       3.14.1.0

If Flash Player is installed, I can't get this debug info, because Firefox hangs.

Looking forward to suggestions to resolve this.