I recommend trying to run Firefox as an Administrator. To do this right click Firefox and click Run as... then choose the Administrator account

Hello jandamass, be sure that Firefox is not set to run as Administrator. Right-click Firefox shortcut > Properties > deselect all items in Compatibility tab.

"Run this program in compatibility mode for:" keep it unchecked

check the same in firefox.exe program in Firefox program folder C:\Program Files\Mozilla Firefox\

thank you

I have the same problem. All the boxes are unchecked. Where exactly do I find the same in the program folder?

Firefox program folder:

• (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
• (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

If that doesn't help the do a clean reinstall and make sure to delete the Firefox program folder.

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

• Firefox 27: http://www.mozilla.org/en-US/firefox/all.html

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

• Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you lose personal data like bookmarks and passwords from profiles of other Firefox versions.

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

• (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
• (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

• 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.
• http://kb.mozillazine.org/Uninstalling_Firefox

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.

• http://kb.mozillazine.org/Profile_folder_-_Firefox
• http://kb.mozillazine.org/Profile_backup

• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

Thanks for that.

I know where the mozilla folder is on the computer but it is not clear once you are in the folder where to go next. I have a list of Browser, components, defaults etc. C:\Program Files (x86)\Mozilla Firefox\?????????\?????????\