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I keep getting an error message when I log onto Firefox and I can't figure out how to fix it, can you help?

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Locking duplicate thread.
Please continue here: [/questions/967949]

Every time I log onto Firefox I get the following message:

"Could not initialize the application's security component. The most likely cause is problems with files in your application's profile directory. Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behaviour when accessing security features."

I would like to fix whatever is causing this error message to appear, but I haven't found my, "application's profile directory" so that I can check for "read/write restrictions". My hard drive is 640GB with 554GB free space remaining.

I am running Windows 7 - 64 and am using Avast Internet Security 2013.

I was going to follow the manual troubleshooting as recommended, but I can't get online using Firefox. It starts to open but then stops with a "New Tab" that looks like it is trying to load (arrow going around in circle) but never gets past that point. I am using Google to connect with you for this help session.

<blockquote>Locking duplicate thread.<br> Please continue here: [[/questions/967949]] </blockquote> Every time I log onto Firefox I get the following message: "Could not initialize the application's security component. The most likely cause is problems with files in your application's profile directory. Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behaviour when accessing security features." I would like to fix whatever is causing this error message to appear, but I haven't found my, "application's profile directory" so that I can check for "read/write restrictions". My hard drive is 640GB with 554GB free space remaining. I am running Windows 7 - 64 and am using Avast Internet Security 2013. I was going to follow the manual troubleshooting as recommended, but I can't get online using Firefox. It starts to open but then stops with a "New Tab" that looks like it is trying to load (arrow going around in circle) but never gets past that point. I am using Google to connect with you for this help session.

Modified by cor-el

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This article has a link for more information on finding your profile directory: Fix the "Could not initialize the application's security component" error message. On Windows 7, you can try this (either in a Windows Explorer window address bar or from the start menu search box):

%APPDATA%\Mozilla\Firefox\Profiles

You may see one folder in there and that's the one you want. If you see more than one, look for the one with the most recently modified files.