Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Søg i Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

AddonManager is not initialized

  • 1 svar
  • 1 har dette problem
  • 1 visning
  • Seneste svar af FredMcD

more options

I have set up latest version firefox V42.0 as enterprise wide software running on windows.

I want to have the Markdown Viewer add-in (markdownviewer@thiht.fr.xpi) available and active for all users.

I have used the CCK2 add-in (cck2wizard@kaply.com.xpi) to specify all the details. Everything works fine for my account when accessing firefox, but new users recieve the following message

  • * *

[Exception... "AddonManager is not initialized" nsresult: "0xc1f30001 (NS_ERROR_NOT_INITIALIZED)" location: "JS frame :: resource://gre/modules/AddonManager.jsm :: AMI_getInstallForURL :: line 1897" data: no]

AMI_getInstallForURL@resource://gre/modules/AddonManager.jsm:1897:1 AM_getInstallForURL@resource://gre/modules/AddonManager.jsm:3014:1 observe@resource://cck2/CCK2.jsm:847:15

  • * *

The add-in isn't copied from the firefox install folder (which is a read-only mapped drive on an external server) to %APPDATA%\Mozilla\Firefox\Profiles.


Question: What should I be doing so that new users can use firefox and apart from the "importing settings" type dialog everything is seamless and the markdown viewer add-on works?

I have set up latest version firefox V42.0 as enterprise wide software running on windows. I want to have the Markdown Viewer add-in (markdownviewer@thiht.fr.xpi) available and active for all users. I have used the CCK2 add-in (cck2wizard@kaply.com.xpi) to specify all the details. Everything works fine for my account when accessing firefox, but new users recieve the following message * * * [Exception... "AddonManager is not initialized" nsresult: "0xc1f30001 (NS_ERROR_NOT_INITIALIZED)" location: "JS frame :: resource://gre/modules/AddonManager.jsm :: AMI_getInstallForURL :: line 1897" data: no] AMI_getInstallForURL@resource://gre/modules/AddonManager.jsm:1897:1 AM_getInstallForURL@resource://gre/modules/AddonManager.jsm:3014:1 observe@resource://cck2/CCK2.jsm:847:15 * * * The add-in isn't copied from the firefox install folder (which is a read-only mapped drive on an external server) to %APPDATA%\Mozilla\Firefox\Profiles. Question: What should I be doing so that new users can use firefox and apart from the "importing settings" type dialog everything is seamless and the markdown viewer add-on works?

Alle svar (1)

more options

Let's start here first,

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

Delete the extensions.* files (e.g. extensions.json, 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 or not compatible extensions in "Firefox/Tools > Add-ons > Extensions" then click the Tools button at the left end of the Search bar to check if there is a compatibility update available.

If this hasn't helped then also delete possible addons.json and addons.sqlite files.

You can also check for problems with preferences.