Can open Firefox XPCOM file is missing. He can either uninstall and cannot download the new exe. What can I do?

Equipped with Windows Vista. Stop down my PC two day and when I booted up it would not start. Click on the button of power again and it started in safe mode and asked me to run a repair program that I made. After that Firefox does not open and I get the message "XPCOM is missing." everything else works. Tried to uninstall Firefox and cannot do it either. the uninstaller from Control Panel does not work and I found the Mozilla Firefox uninstall Help files and which will not be executed. I get the windows on the screen asking me to continue, or cancel and when I hit continue the dialog box just disappears and nothing happens. Can not download Firefox exe file again. I am running Trend Micro security PC.

You need to reinstall, you don't, because none of your bookmarks, history etc. WILL NOT BE LOST.
Note: You can print these steps or consult them in another browser.

  1. Download the latest version of Firefox from http://www.mozilla.org office and save the installer to your computer.
  2. Once the download is complete, close all Firefox Windows (click on quit in the file menu or Firefox).
  3. Remove the Firefox installation folder, which is located in one of these locations, by default:
    • Windows:

      • C:\Program Files\Mozilla Firefox
      • C:\Program Files (x 86) \Mozilla Firefox
    • Mac: Delete Firefox in the Applications folder.
    • Linux: If you have installed Firefox with the distribution-based package manager, you must use the same way to uninstall: see Install Firefox on Linux. If you have downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
  4. Now, go ahead and reinstall Firefox:
    1. Double-click on the downloaded Setup file and go through the steps in the installation wizard.
    2. Once the wizard is completed, click to open Firefox directly after clicking the Finish button.

Tags: Firefox

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