This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

problem with latest version of firefox 15.0.1,whenever i download video from youtube or any other site using idm it shows .webm format instead of flv or mp4.

  • 1 baphendule
  • 16 zinale nkinga
  • 1 view
  • Igcine ukuphendulwa ngu cor-el

sohaib1090
sohaib1090
more options

problem with latest version of firefox 15.0.1,whenever i download video from youtube or any other site using idm it shows only .webm format to download instead of flv or mp4.previous version works fine.also other browsers work fine.

problem with latest version of firefox 15.0.1,whenever i download video from youtube or any other site using idm it shows only .webm format to download instead of flv or mp4.previous version works fine.also other browsers work fine.

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"