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xpinstall.enabled file is missing, where do I find?

Posted

I am issues with add-ons. Cannot install: error message as follows: Item could not be installed because Firefox could not modify the needed file.

Now, I am having issues with removal of add-ons, I click remove and click Restart Firefox but the add-ons are not removed.

The add-ons that I am trying to install are as follows:

Gmail Checker, Gmail Manager, Gmail S/MIME, Open Gmail with toolbar button, Better Gmail 2, Creatimail Email Themes, Google Shortcuts, Preloader (for Firefox).

The add-ons I am trying to remove are:

Date Picker Calendar, Ecleaner, Bulk you Tube Video, Form Control Context Menu, Auto-Sort Bookmarks, Ramback, Open With, Slim Add-ons Manager, Restart Firefox.

Also xpinstall.enabled file is missing.

Chosen solution

Quote: Cannot install: error message as follows: Item could not be installed because Firefox could not modify the needed file.

You get this error if an extensions needs to be unpacked in order to work properly.
Normally extensions are installed with the XPI files renamed to the GUID of the extension, but some extensions also tore data in its extension folder and such extensions only work when unpacked.

The xpinstall.enabled pref is only present on the about:config page when you add it yoursels.
When absent then it defaults to true.


It is possible that there is a problem with the file(s) that store the extensions registry.

Delete the extensions.* files (e.g. extensions.sqlite, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry.

New files will be created when required.

See "Corrupt extension files":

If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left end side of the Search Bar ("Find Updates" button in older Firefox versions) to check if there is a compatibility update available.

If this hasn't helped then also delete the addons.sqlite file.

Read this answer in context 1

Additional System Details

Installed Plug-ins

  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • npsitesafety
  • Shockwave Flash 11.7 r700
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.03
  • HP Pit Plugin
  • HP Product Detection Plugin
  • HP Active Check Plugin
  • iTunes Detector Plug-in
  • Next Generation Java Plug-in 10.21.2 for Mozilla browsers
  • Adobe Shockwave for Director Netscape plug-in, version 12.0.2.122
  • Picasa plugin
  • 5.1.20125.0
  • IE Tab 2 Plug-in for Mozilla/Firefox
  • WildTangent Games App V2 Presence Detector
  • NPWLPG
  • The plug-in allows you to open and edit files using Microsoft Office applications

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0

More Information

Application Basics
Name
Firefox
Version
21.0
User Agent
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0
Build Configuration
about:buildconfig
Extensions
Name
Version
Enabled
ID
AddThis
3.5.9
true
{3e0e7d2a-070f-4a47-b019-91fe5385ba79}
All-in-One Sidebar
0.7.18
true
{097d3191-e6fa-4728-9826-b533d755359d}
AVG Security Toolbar
15.2.0.5
true
avg@toolbar
Browser Backgrounds
8.3
true
{3e0c7f3a-3f50-4730-beb5-4a9a10e2831c}
BrowserProtect
1.1.3
true
browserprotect@browserprotect.com
Cache Status
0.7.10
true
cache@status.org
Case Changer
2.0.0.18
true
casechanger@plugin
Dictionary Switcher
1.3.2
true
dictionary-switcher@design-noir.de
Dictionnaires français
4.10
true
fr-dicollecte@dictionaries.addons.mozilla.org
Download Statusbar
0.9.10
true
{D4DD63FA-01E4-46a7-B6B1-EDAB7D6AD389}
Empty Cache Button
2.2
true
{4cc4a13b-94a6-7568-370d-5f9de54a9c7f}
Fasterfox
3.9.81
true
{c36177c0-224a-11da-8cd6-0800200c9a91}
FEBE
7.1.0
true
{4BBDD651-70CF-4821-84F8-2B918CF89CA3}
Firesizer
1.7
true
{04426594-bce6-4705-b811-bcdba2fd9c7b}
Flagfox
4.2.9
true
{1018e4d6-728f-4b20-ad56-37578a4de76b}
Fox Splitter
2.1.2012122901
true
foxsplitter@piro.sakura.ne.jp
FoxClocks
3.1.26
true
{d37dc5d0-431d-44e5-8c91-49419370caa1}
Google Translator for Firefox
2.1.0.3
true
translator@zoli.bod
HP Detect
1.0.24.1
true
{ab91efd4-6975-4081-8552-1b3922ed79e2}
IE Tab 2 (FF 3.6+)
4.12.22.2
true
{1BC9BA34-1EED-42ca-A505-6D2F1A935BBB}
Language Pack Install Helper
2.4
true
jid0-3qAYz7se7F3gEIA63LjbuEaPEDk@jetpack
Make Address Bar Font Size Bigger
1.1.7
true
addressBarFontSizeBigger@papafresh.com
Memory Fox
7.4
true
{E173B749-DB5B-4fd2-BA0E-94ECEA0CA55B}
Memory Restart
1.11
true
memoryrestart@teamextension.com
Menu Editor
1.2.7
true
{EDA7B1D7-F793-4e03-B074-E6F303317FB0}
MinimizeToTray revived (MinTrayR)
1.1.2
true
mintrayr@tn123.ath.cx
Movable Firefox Button
1.4
true
movableAppButton@Merci.chao
NoSquint
2.1.9
true
nosquint@urandom.ca
Open in IE
1.4
true
openinie@wittersworld.com
Personas Plus
1.7.2.1
true
personas@christopher.beard
Quick Maps
1.9.0
true
map@quickmaps.me
RoboForm Toolbar for Firefox
7.8.8.5
true
{22119944-ED35-4ab1-910B-E619EA06A115}
Saved Password Editor
2.7
true
savedpasswordeditor@daniel.dawson
Searchbar Autosizer
2.0.20
true
{655397ca-4766-496b-b7a8-3a5b176ee4c2}
Session Manager
0.8.0.6
true
{1280606b-2510-4fe0-97ef-9b5a22eafe30}
Simple Adblock
1.0.8
true
simpleadblock@wips.com
StretchClock - Desk Yoga Break Reminder. Feel better, be more productive.
2.0.2
true
info@stretchclock.com
Tab Mix Plus
0.4.1.0
true
{dc572301-7619-498c-a57d-39143191b318}
Test Your memory!
1.2
true
memory@lipo-technologies.com
Themes Menu
1.17
true
{84625510-7e5d-11e0-a411-0800200c9a66}
Thumbnail Zoom Plus
2.4.2
true
thumbnailZoom@dadler.github.com
Toolbar Buttons
1.0
true
{03B08592-E5B4-45ff-A0BE-C1D975458688}
Tube Enhancer Plus
1.9
true
firefoxaddon@youtubeenhancer.com
Unhide Passwords
1.2.7.0
true
{2e17e2b2-b8d4-4a67-8d7b-fafa6cc9d1d0}
X-notifier
3.3.1
true
{37fa1426-b82d-11db-8314-0800200c9a66}
YouTube Unblocker
0.4.0
true
youtubeunblocker@unblocker.yt
Youtube Video Center
2.4
true
{34878998-c8be-40bc-bc13-9243a2844976}
Auto-Sort Bookmarks
1.6
false
sortbookmarks@bouanto
British English Dictionary
1.19.1
false
en-GB@dictionaries.addons.mozilla.org
BYTubeD - Bulk YouTube video Downloader
1.1.1
false
bytubed@cs213.cse.iitk.ac.in
Date Picker/Calendar
2.1.73
false
{A6A0B3F6-6D2D-4c55-96C1-7481BEA2EBF8}
eCleaner
1.4
false
{c72c0c73-4eb0-4fb3-af0f-074e97326cfd}
Form Control Context Menu
1.0
false
formcontrolcontextmenu@ehsanakhgari.org
Open With
5.3.1
false
openwith@darktrojan.net
RAMBack
1.0
false
ramback@pavlov.net
Restart Firefox
0.5
false
restart@restart.org
Slim Add-ons Manager
9
false
slimaddonmanager@opendfki.de
Important Modified Preferences
Name
Value
accessibility.blockautorefresh
true
accessibility.browsewithcaret
true
accessibility.typeaheadfind
true
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
3072
browser.cache.disk.smart_size.enabled
false
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.cache.memory.capacity
18
browser.link.open_newwindow.override.external
3
browser.link.open_newwindow.restriction
0
browser.places.smartBookmarksVersion
4
browser.search.openintab
true
browser.sessionstore.max_windows_undo
8
browser.startup.homepage
http://ca.my.msn.com/default.aspx?lang=en-ca&mypg=1
browser.startup.homepage_override.buildID
20130511120803
browser.startup.homepage_override.mstone
21.0
browser.tabs.closeWindowWithLastTab
false
browser.tabs.insertRelatedAfterCurrent
false
browser.tabs.loadInBackground
false
browser.tabs.selectOwnerOnClose
false
browser.urlbar.autocomplete.enabled
false
browser.zoom.siteSpecific
false
dom.ipc.plugins.enabled.npietab2.dll
true
dom.max_chrome_script_run_time
60
dom.mozApps.used
true
dom.w3c_touch_events.expose
false
extensions.lastAppVersion
21.0
font.internaluseonly.changed
false
font.name.serif.x-western
Comic Sans MS
gfx.direct3d.prefer_10_1
true
mousewheel.withcontrolkey.action
3
network.cookie.prefsMigrated
true
network.http.max-persistent-connections-per-server
4
places.database.lastMaintenance
1369522014
places.history.expiration.transient_current_max_pages
103491
plugin.disable_full_page_plugin_for_types
application/pdf,audio/mid,audio/midi,audio/x-midi,audio/wav,audio/x-wav,audio/x-mpeg,audio/mpeg,video/x-mpeg,video/mpeg
privacy.clearOnShutdown.cookies
false
privacy.clearOnShutdown.sessions
false
privacy.cpd.cookies
false
privacy.cpd.extensions-sessionmanager
false
privacy.cpd.extensions-tabmix
false
privacy.sanitize.migrateFx3Prefs
true
privacy.sanitize.timeSpan
0
security.warn_viewing_mixed
false
user.js Preferences
Your profile folder contains a
user.js file, which includes preferences that were not created by Firefox.
Graphics
Adapter Description
Intel(R) HD Graphics Family
Adapter Drivers
igdumd64 igd10umd64 igd10umd64 igdumdx32 igd10umd32 igd10umd32
Adapter RAM
Unknown
ClearType Parameters
Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 400
Device ID
0x0106
Direct2D Enabled
true
DirectWrite Enabled
true (6.2.9200.16492)
Driver Date
6-10-2011
Driver Version
8.15.10.2418
GPU #2 Active
false
GPU Accelerated Windows
1/1 Direct3D 10
Vendor ID
0x8086
WebGL Renderer
Google Inc. -- ANGLE (Intel(R) HD Graphics Family)
AzureCanvasBackend
direct2d
AzureContentBackend
direct2d
AzureFallbackCanvasBackend
cairo
JavaScript
Incremental GC
true
Accessibility
Activated
true
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.6
4.9.6
NSS
3.14.3.0 Basic ECC
3.14.3.0 Basic ECC
NSSSMIME
3.14.3.0 Basic ECC
3.14.3.0 Basic ECC
NSSSSL
3.14.3.0 Basic ECC
3.14.3.0 Basic ECC
NSSUTIL
3.14.3.0
3.14.3.0

cor-el
  • Top 10 Contributor
  • Moderator
10737 solutions 96600 answers

Chosen Solution

Quote: Cannot install: error message as follows: Item could not be installed because Firefox could not modify the needed file.

You get this error if an extensions needs to be unpacked in order to work properly.
Normally extensions are installed with the XPI files renamed to the GUID of the extension, but some extensions also tore data in its extension folder and such extensions only work when unpacked.

The xpinstall.enabled pref is only present on the about:config page when you add it yoursels.
When absent then it defaults to true.


It is possible that there is a problem with the file(s) that store the extensions registry.

Delete the extensions.* files (e.g. extensions.sqlite, extensions.ini) and compatibility.ini in the Firefox profile folder to reset the extensions registry.

New files will be created when required.

See "Corrupt extension files":

If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left end side of the Search Bar ("Find Updates" button in older Firefox versions) to check if there is a compatibility update available.

If this hasn't helped then also delete the addons.sqlite file.

Question owner

Good morning:

Thank you so very much, the problem is now solved.

Hugs,

Joyce (MaryBrenda)