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"Firefox must be restarted to install add-ons", but restarting does nothing

Posted

On the add-ons screen, it says "Restart Firefox to complete your changes", so I click restart, but when the browser restarts it still says the same thing. No new add-ons can be installed or updated, or even removed because it keeps asking for it to be restarted. This only happened a few days ago as soon as I updated to the latest Firefox, but the problem remains if I try using the older browser version.

On the add-ons screen, it says "Restart Firefox to complete your changes", so I click restart, but when the browser restarts it still says the same thing. No new add-ons can be installed or updated, or even removed because it keeps asking for it to be restarted. This only happened a few days ago as soon as I updated to the latest Firefox, but the problem remains if I try using the older browser version.

Chosen solution

Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry. See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions

If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.

Read this answer in context 5

Additional System Details

Installed Plug-ins

  • -Cooliris embedded in a tab
  • npmnqmp 989898989877
  • Default Plug-in
  • Adobe PDF Plug-In For Firefox and Netscape "9.3.2"
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Google Update
  • Shockwave Flash 10.0 r45
  • Adobe Shockwave for Director Netscape plug-in, version 11.5
  • iTunes Detector Plug-in
  • DivX Web Player version 2.0.2.39
  • GEPlugin
  • 3.0.50106.0
  • Office Live Update v1.4
  • NPWLPG
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • Google Updater pluginhttp://pack.google.com/
  • 6.0.12.448
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • Next Generation Java Plug-in 1.6.0_18 for Mozilla browsers

Application

  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.2b5) Gecko/20091204 Firefox/3.6b5

More Information

a

Morbus 135 solutions 2340 answers

You are using an unsupported beta version of Firefox 3.6. Update Firefox to Firefox 3.6.3 (download it off the official site - getfirefox.com ) and see if that fixes the issue.

You are using an unsupported beta version of Firefox 3.6. Update Firefox to Firefox 3.6.3 (download it off the official site - getfirefox.com ) and see if that fixes the issue.

Question owner

As I already mentioned I have tried the Mozilla Firefox version 3.6.3 but I have the same problem in this browser, ever since I installed the beta. Do I have to completely delete the beta from my system for add-ons to work again?

As I already mentioned I have tried the Mozilla Firefox version 3.6.3 but I have the same problem in this browser, ever since I installed the beta. Do I have to completely delete the beta from my system for add-ons to work again?
Morbus 135 solutions 2340 answers

On paper (the majority of the cases), you don't, as long as the beta and the stable builds are installed in different locations.

If this is an issue you've been noticing for a few days (i.e., on different windows sessions) then I don't know how to help. But if you haven't restarted your computer yet, do this:

1 - install an extension; 2 - close the browser (don't click the restart button, just close it); 3 - press CTRL+SHIFT+ESC to open the task manager; 4 - see if Firefox is still running. If it is not, jump to 6; 5 - terminate the firefox.exe process (in the processes tab, not in the applications tab - if you're using Windows' default task manager) 6 - start firefox.

If this doesn't fix the issue, I have no idea how to help you. Sorry. Hopefully someone else will.

On paper (the majority of the cases), you don't, as long as the beta and the stable builds are installed in different locations. If this is an issue you've been noticing for a few days (i.e., on different windows sessions) then I don't know how to help. But if you haven't restarted your computer yet, do this: 1 - install an extension; 2 - close the browser (don't click the restart button, just close it); 3 - press CTRL+SHIFT+ESC to open the task manager; 4 - see if Firefox is still running. If it is not, jump to 6; 5 - terminate the firefox.exe process (in the processes tab, not in the applications tab - if you're using Windows' default task manager) 6 - start firefox. If this doesn't fix the issue, I have no idea how to help you. Sorry. Hopefully someone else will.

Question owner

I've tried these steps, also removed the Firefox Beta altogether, restarted the computer. Still doesn't work. I suppose worst comes to the worst I'll have to remove Firefox altogether and reinstall it from scratch.

I've tried these steps, also removed the Firefox Beta altogether, restarted the computer. Still doesn't work. I suppose worst comes to the worst I'll have to remove Firefox altogether and reinstall it from scratch.
Morbus 135 solutions 2340 answers

Helpful Reply

That shouldn't be needed. Do this, please:

- type about:support in your address bar and press enter - click "Copy all to clipboard" - paste here the result (just paste)

That should be helpful, since it's possible that there's some issue with the profile itself, and not the Firefox installation.

EDIT:

To the mods, I accidentally reported this post, never mind. Also, please include some "unreport" function. It's pretty basic...

That shouldn't be needed. Do this, please: - type about:support in your address bar and press enter - click "Copy all to clipboard" - paste here the result (just paste) That should be helpful, since it's possible that there's some issue with the profile itself, and not the Firefox installation. :EDIT: To the mods, I accidentally reported this post, never mind. Also, please include some "unreport" function. It's pretty basic...
cor-el
  • Top 10 Contributor
  • Moderator
17339 solutions 156760 answers

Chosen Solution

Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry. See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions

If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.

Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini) and compatibility.ini in the Firefox [[Profiles|profile folder]] to reset the extensions registry. See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions If you see disabled extensions that are not compatible on the next start in "Tools > Add-ons > Extensions" then click the "Find Updates" button to do a compatibility check.

Question owner

Thanks, deleting the files worked.

Thanks, deleting the files worked.

Question owner

I just updated to 3.6.6 and I have the same issue. No matter how many times I terminate the process and restart firefox, I cannot get it to actually install the addons.


 Application Basics
       Name
       Firefox
       Version
       3.6.6
       Profile Directory
         Open Containing Folder
       Installed Plugins
         about:plugins
       Build Configuration
         about:buildconfig
 Extensions
       Name
       Version
       Enabled
       ID
       Firebug
       1.5.4
       true
       firebug@software.joehewitt.com
       Java Console
       6.0.16
       true
        
       Microsoft .NET Framework Assistant
       1.2.1
       true
       {20a82645-c095-46ed-80e3-08825760534b}
       Adblock Plus
       1.2
       true
        
       WebMail Notifier
       2.4.2
       true
       {37fa1426-b82d-11db-8314-0800200c9a66}
 Modified Preferences
     Name
     Value
       accessibility.typeaheadfind.flashBar
       0
       browser.history_expire_days.mirror
       180
       browser.places.smartBookmarksVersion
       2
       browser.startup.homepage
       http://wowsource.us
       browser.startup.homepage_override.mstone
       rv:1.9.2.6
       extensions.lastAppVersion
       3.6.6
       general.useragent.extra.microsoftdotnet
       ( .NET CLR 3.5.30729; .NET4.0E)
       network.cookie.prefsMigrated
       true
       print.print_printer
       HP Photosmart C7100 series
       print.printer_HP_Photosmart_C7100_series.print_bgcolor
       false
       print.printer_HP_Photosmart_C7100_series.print_bgimages
       false
       print.printer_HP_Photosmart_C7100_series.print_command
       print.printer_HP_Photosmart_C7100_series.print_downloadfonts
       false
       print.printer_HP_Photosmart_C7100_series.print_edge_bottom
       0
       print.printer_HP_Photosmart_C7100_series.print_edge_left
       0
       print.printer_HP_Photosmart_C7100_series.print_edge_right
       0
       print.printer_HP_Photosmart_C7100_series.print_edge_top
       0
       print.printer_HP_Photosmart_C7100_series.print_evenpages
       true
       print.printer_HP_Photosmart_C7100_series.print_footercenter
       print.printer_HP_Photosmart_C7100_series.print_footerleft
       &PT
       print.printer_HP_Photosmart_C7100_series.print_footerright
       &D
       print.printer_HP_Photosmart_C7100_series.print_headercenter
       print.printer_HP_Photosmart_C7100_series.print_headerleft
       &T
       print.printer_HP_Photosmart_C7100_series.print_headerright
       &U
       print.printer_HP_Photosmart_C7100_series.print_in_color
       true
       print.printer_HP_Photosmart_C7100_series.print_margin_bottom
       0.5
       print.printer_HP_Photosmart_C7100_series.print_margin_left
       0.5
       print.printer_HP_Photosmart_C7100_series.print_margin_right
       0.5
       print.printer_HP_Photosmart_C7100_series.print_margin_top
       0.5
       print.printer_HP_Photosmart_C7100_series.print_oddpages
       true
       print.printer_HP_Photosmart_C7100_series.print_orientation
       0
       print.printer_HP_Photosmart_C7100_series.print_pagedelay
       500
       print.printer_HP_Photosmart_C7100_series.print_paper_data
       1
       print.printer_HP_Photosmart_C7100_series.print_paper_height
       11.00
       print.printer_HP_Photosmart_C7100_series.print_paper_size_type
       0
       print.printer_HP_Photosmart_C7100_series.print_paper_size_unit
       0
       print.printer_HP_Photosmart_C7100_series.print_paper_width
       8.50
       print.printer_HP_Photosmart_C7100_series.print_reversed
       false
       print.printer_HP_Photosmart_C7100_series.print_scaling
       1.00
       print.printer_HP_Photosmart_C7100_series.print_shrink_to_fit
       true
       print.printer_HP_Photosmart_C7100_series.print_to_file
       false
       print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_bottom
       0
       print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_left
       0
       print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_right
       0
       print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_top
       0
       print.printer_Microsoft_XPS_Document_Writer.print_bgcolor
       false
       print.printer_Microsoft_XPS_Document_Writer.print_bgimages
       false
       print.printer_Microsoft_XPS_Document_Writer.print_command
       print.printer_Microsoft_XPS_Document_Writer.print_downloadfonts
       false
       print.printer_Microsoft_XPS_Document_Writer.print_edge_bottom
       0
       print.printer_Microsoft_XPS_Document_Writer.print_edge_left
       0
       print.printer_Microsoft_XPS_Document_Writer.print_edge_right
       0
       print.printer_Microsoft_XPS_Document_Writer.print_edge_top
       0
       print.printer_Microsoft_XPS_Document_Writer.print_evenpages
       true
       print.printer_Microsoft_XPS_Document_Writer.print_footercenter
       print.printer_Microsoft_XPS_Document_Writer.print_footerleft
       &PT
       print.printer_Microsoft_XPS_Document_Writer.print_footerright
       &D
       print.printer_Microsoft_XPS_Document_Writer.print_headercenter
       print.printer_Microsoft_XPS_Document_Writer.print_headerleft
       &T
       print.printer_Microsoft_XPS_Document_Writer.print_headerright
       &U
       print.printer_Microsoft_XPS_Document_Writer.print_in_color
       true
       print.printer_Microsoft_XPS_Document_Writer.print_margin_bottom
       0.5
       print.printer_Microsoft_XPS_Document_Writer.print_margin_left
       0.5
       print.printer_Microsoft_XPS_Document_Writer.print_margin_right
       0.5
       print.printer_Microsoft_XPS_Document_Writer.print_margin_top
       0.5
       print.printer_Microsoft_XPS_Document_Writer.print_oddpages
       true
       print.printer_Microsoft_XPS_Document_Writer.print_orientation
       0
       print.printer_Microsoft_XPS_Document_Writer.print_pagedelay
       500
       print.printer_Microsoft_XPS_Document_Writer.print_paper_data
       1
       print.printer_Microsoft_XPS_Document_Writer.print_paper_height
       11.00
       print.printer_Microsoft_XPS_Document_Writer.print_paper_size_type
       0
       print.printer_Microsoft_XPS_Document_Writer.print_paper_size_unit
       0
       print.printer_Microsoft_XPS_Document_Writer.print_paper_width
       8.50
       print.printer_Microsoft_XPS_Document_Writer.print_reversed
       false
       print.printer_Microsoft_XPS_Document_Writer.print_scaling
       1.00
       print.printer_Microsoft_XPS_Document_Writer.print_shrink_to_fit
       true
       print.printer_Microsoft_XPS_Document_Writer.print_to_file
       false
       print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_bottom
       0
       print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_left
       0
       print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_right
       0
       print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_top
       0
       privacy.sanitize.migrateFx3Prefs
       true
       security.warn_viewing_mixed
       false

It says the addons are enabled but they actually aren't.

I just updated to 3.6.6 and I have the same issue. No matter how many times I terminate the process and restart firefox, I cannot get it to actually install the addons. Application Basics Name Firefox Version 3.6.6 Profile Directory Open Containing Folder Installed Plugins about:plugins Build Configuration about:buildconfig Extensions Name Version Enabled ID Firebug 1.5.4 true firebug@software.joehewitt.com Java Console 6.0.16 true Microsoft .NET Framework Assistant 1.2.1 true {20a82645-c095-46ed-80e3-08825760534b} Adblock Plus 1.2 true WebMail Notifier 2.4.2 true {37fa1426-b82d-11db-8314-0800200c9a66} Modified Preferences Name Value accessibility.typeaheadfind.flashBar 0 browser.history_expire_days.mirror 180 browser.places.smartBookmarksVersion 2 browser.startup.homepage http://wowsource.us browser.startup.homepage_override.mstone rv:1.9.2.6 extensions.lastAppVersion 3.6.6 general.useragent.extra.microsoftdotnet ( .NET CLR 3.5.30729; .NET4.0E) network.cookie.prefsMigrated true print.print_printer HP Photosmart C7100 series print.printer_HP_Photosmart_C7100_series.print_bgcolor false print.printer_HP_Photosmart_C7100_series.print_bgimages false print.printer_HP_Photosmart_C7100_series.print_command print.printer_HP_Photosmart_C7100_series.print_downloadfonts false print.printer_HP_Photosmart_C7100_series.print_edge_bottom 0 print.printer_HP_Photosmart_C7100_series.print_edge_left 0 print.printer_HP_Photosmart_C7100_series.print_edge_right 0 print.printer_HP_Photosmart_C7100_series.print_edge_top 0 print.printer_HP_Photosmart_C7100_series.print_evenpages true print.printer_HP_Photosmart_C7100_series.print_footercenter print.printer_HP_Photosmart_C7100_series.print_footerleft &PT print.printer_HP_Photosmart_C7100_series.print_footerright &D print.printer_HP_Photosmart_C7100_series.print_headercenter print.printer_HP_Photosmart_C7100_series.print_headerleft &T print.printer_HP_Photosmart_C7100_series.print_headerright &U print.printer_HP_Photosmart_C7100_series.print_in_color true print.printer_HP_Photosmart_C7100_series.print_margin_bottom 0.5 print.printer_HP_Photosmart_C7100_series.print_margin_left 0.5 print.printer_HP_Photosmart_C7100_series.print_margin_right 0.5 print.printer_HP_Photosmart_C7100_series.print_margin_top 0.5 print.printer_HP_Photosmart_C7100_series.print_oddpages true print.printer_HP_Photosmart_C7100_series.print_orientation 0 print.printer_HP_Photosmart_C7100_series.print_pagedelay 500 print.printer_HP_Photosmart_C7100_series.print_paper_data 1 print.printer_HP_Photosmart_C7100_series.print_paper_height 11.00 print.printer_HP_Photosmart_C7100_series.print_paper_size_type 0 print.printer_HP_Photosmart_C7100_series.print_paper_size_unit 0 print.printer_HP_Photosmart_C7100_series.print_paper_width 8.50 print.printer_HP_Photosmart_C7100_series.print_reversed false print.printer_HP_Photosmart_C7100_series.print_scaling 1.00 print.printer_HP_Photosmart_C7100_series.print_shrink_to_fit true print.printer_HP_Photosmart_C7100_series.print_to_file false print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_bottom 0 print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_left 0 print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_right 0 print.printer_HP_Photosmart_C7100_series.print_unwriteable_margin_top 0 print.printer_Microsoft_XPS_Document_Writer.print_bgcolor false print.printer_Microsoft_XPS_Document_Writer.print_bgimages false print.printer_Microsoft_XPS_Document_Writer.print_command print.printer_Microsoft_XPS_Document_Writer.print_downloadfonts false print.printer_Microsoft_XPS_Document_Writer.print_edge_bottom 0 print.printer_Microsoft_XPS_Document_Writer.print_edge_left 0 print.printer_Microsoft_XPS_Document_Writer.print_edge_right 0 print.printer_Microsoft_XPS_Document_Writer.print_edge_top 0 print.printer_Microsoft_XPS_Document_Writer.print_evenpages true print.printer_Microsoft_XPS_Document_Writer.print_footercenter print.printer_Microsoft_XPS_Document_Writer.print_footerleft &PT print.printer_Microsoft_XPS_Document_Writer.print_footerright &D print.printer_Microsoft_XPS_Document_Writer.print_headercenter print.printer_Microsoft_XPS_Document_Writer.print_headerleft &T print.printer_Microsoft_XPS_Document_Writer.print_headerright &U print.printer_Microsoft_XPS_Document_Writer.print_in_color true print.printer_Microsoft_XPS_Document_Writer.print_margin_bottom 0.5 print.printer_Microsoft_XPS_Document_Writer.print_margin_left 0.5 print.printer_Microsoft_XPS_Document_Writer.print_margin_right 0.5 print.printer_Microsoft_XPS_Document_Writer.print_margin_top 0.5 print.printer_Microsoft_XPS_Document_Writer.print_oddpages true print.printer_Microsoft_XPS_Document_Writer.print_orientation 0 print.printer_Microsoft_XPS_Document_Writer.print_pagedelay 500 print.printer_Microsoft_XPS_Document_Writer.print_paper_data 1 print.printer_Microsoft_XPS_Document_Writer.print_paper_height 11.00 print.printer_Microsoft_XPS_Document_Writer.print_paper_size_type 0 print.printer_Microsoft_XPS_Document_Writer.print_paper_size_unit 0 print.printer_Microsoft_XPS_Document_Writer.print_paper_width 8.50 print.printer_Microsoft_XPS_Document_Writer.print_reversed false print.printer_Microsoft_XPS_Document_Writer.print_scaling 1.00 print.printer_Microsoft_XPS_Document_Writer.print_shrink_to_fit true print.printer_Microsoft_XPS_Document_Writer.print_to_file false print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_bottom 0 print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_left 0 print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_right 0 print.printer_Microsoft_XPS_Document_Writer.print_unwriteable_margin_top 0 privacy.sanitize.migrateFx3Prefs true security.warn_viewing_mixed false ---- It says the addons are enabled but they actually aren't.

Question owner

Original poster here. Funnily enough I had the same problem as Mike today. I deleted the files as Cor-el suggested and it installed the Add-Ons as normal again.

Original poster here. Funnily enough I had the same problem as Mike today. I deleted the files as Cor-el suggested and it installed the Add-Ons as normal again.

Question owner

Yes, thank you Cor-el, that resolved my problem as well and sorry I didn't post back to let you know that. Thanks cor-el! And I'm glad you got your issue resolved too, Liam.

Yes, thank you Cor-el, that resolved my problem as well and sorry I didn't post back to let you know that. Thanks cor-el! And I'm glad you got your issue resolved too, Liam.