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how to uninstall nightly 64 when vista uninstall does not work?

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When I go to launch nightly 64 it says "couldn't load XPCOM" when. I then tried uninstalling just nightly and simply put nothing happens. I do have the generic Mozilla Firefox and in the uninstall it also shows "Mozilla maintenance services" and I recently prob a couple of months ago installed thunderbird for the first time ever though I doubt this has anything to do with any of these issues because if I recall correctly I've had this happened to me once before. One other thing i can add is i have vista ultimate with 12 gigs of memory.

When I go to launch nightly 64 it says "couldn't load XPCOM" when. I then tried uninstalling just nightly and simply put nothing happens. I do have the generic Mozilla Firefox and in the uninstall it also shows "Mozilla maintenance services" and I recently prob a couple of months ago installed thunderbird for the first time ever though I doubt this has anything to do with any of these issues because if I recall correctly I've had this happened to me once before. One other thing i can add is i have vista ultimate with 12 gigs of memory.

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Hello sebastian869, try a clean re-install and check if the "couldn't load XPCOM" issue does not exist anymore.This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:

Note: You might want to print these steps or view them in another browser.

  1. Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
  2. After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
  3. Delete the Firefox installation folder, which is located in one of these locations, by default:
    • Windows:
      • C:\Program Files\Mozilla Firefox
      • C:\Program Files (x86)\Mozilla Firefox
    • Mac: Delete Firefox from the Applications folder.
    • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you 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 the downloaded installation file and go through the steps of the installation wizard.
    2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.


for nightly : http://nightly.mozilla.org/

Please report back to see if this helped you!

Thank you.


WARNING: Do not run Firefox's uninstaller or use a third party remover as part of this process, because that could permanently delete your Firefox data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be recovered unless they have been backed up to an external device!

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