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I have installed Firefox 5.0.1 and need administrator rights to run it and have lost my list of bookmarks.

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Recently, I upgraded to Firefox 5.0.1. I now require administrator rights to run it. If I start Firefox with ordinary user rights, I am presented with an error message which says that sqlite3.dll is missing from my computer. This file is actually present in three locations on my computer. However, Firefox runs if I start it with administrator rights.

The spell checker no longer works, my list of bookmarks, which was quite extensive, has now disappeared. Also, my history has disappeared too. A security package which I used when accessing my bank account has also disappeared. This was called Rapport.

Recently, I upgraded to Firefox 5.0.1. I now require administrator rights to run it. If I start Firefox with ordinary user rights, I am presented with an error message which says that sqlite3.dll is missing from my computer. This file is actually present in three locations on my computer. However, Firefox runs if I start it with administrator rights. The spell checker no longer works, my list of bookmarks, which was quite extensive, has now disappeared. Also, my history has disappeared too. A security package which I used when accessing my bank account has also disappeared. This was called Rapport.

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Do a clean reinstall.

Download a fresh Firefox copy and save the file to the desktop.

  • Uninstall your current Firefox version.
  • Do not remove personal data when you uninstall the current version.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.