Please update to Firefox 26 and let us know if you still have trouble. Update Firefox to the latest release

Which security software (firewall, anti-virus) do you have?

It is possible that anti-virus software is corrupting downloaded files or is interfering otherwise.

Try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.

See:

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

its mcafee , i uninstalled the program.. but im still getting the same problem.

no i couldn't even update the version of Firefox.. i is always showing an error

Download and save the full Firefox installer to the desktop and start the installation with a double-click on the desktop icon.

You can find the full version of the latest Firefox 26.0 release in all languages and for all Operating Systems here:

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

i tried that... but it showing an error "cannot create temp folder archive" what should i do ? it is cause of some virus ?? this is only happening in my account of the laptop. in other account there is no such problem. but again the application downloaded from that user account wouldn't run in my user account.

Try to disable your anti-virus software temporarily in case it is causing problems.

• http://windows.microsoft.com/en-US/windows-8/windows-startup-settings-including-safe-mode
• http://www.howtogeek.com/107511/how-to-boot-into-safe-mode-on-windows-8-the-easy-way/