Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Funkcionalnosć tutoho sydła so přez wothladowanske dźěła wobmjezuje, kotrež maja waše dožiwjenje polěpšić. Jeli nastawk waš problem njerozrisuje a chceće prašenje stajić, wobroćće so na naše zhromodźenstwo pomocy, kotrež na to čaka, wam na @FirefoxSupport na Twitter a /r/firefox na Reddit pomhać.

Pomoc přepytać

Hladajće so wobšudstwa pomocy. Njenamołwimy was ženje, telefonowe čisło zawołać, SMS pósłać abo wosobinske informacije přeradźić. Prošu zdźělće podhladnu aktiwitu z pomocu nastajenja „Znjewužiwanje zdźělić“.

Dalše informacije

No css in YouTube; page showing as basic html

  • 1 wotmołwa
  • 14 ma tutón problem
  • 14 napohladow
  • Poslednja wotmołwa wot cor-el

more options

I've been having problems with YouTube on Firefox for months. The most recent problem is that YouTube is showing up in basic html (see screen capture). Also (and I don't know if this is unrelated) I have not been able to sign in to YouTube or Google in Firefox.

I've been having problems with YouTube on Firefox for months. The most recent problem is that YouTube is showing up in basic html (see screen capture). Also (and I don't know if this is unrelated) I have not been able to sign in to YouTube or Google in Firefox.
Připowěsnjene fota wobrazowki

Wot dukeEllington32 změnjeny

Wubrane rozrisanje

There is security software like Avast and Kaspersky that intercept secure connections and send their own certificate.

You can check the log in the Web Console for error messages and the Network Monitor (Firefox/Tools > Web Developer) to see if content fails to load or is possibly blocked.

Use "Command + Shift + R" to reload the page and bypass the cache to generate a fresh log.


Clear the cache and remove cookies from websites that cause problems.

"Clear the Cache":

  • Firefox > Preferences > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from websites that cause problems:

  • Firefox > Preferences > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox menu button/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox menu button/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window
Tutu wotmołwu w konteksće čitać 👍 1

Wšě wotmołwy (1)

more options

Wubrane rozrisanje

There is security software like Avast and Kaspersky that intercept secure connections and send their own certificate.

You can check the log in the Web Console for error messages and the Network Monitor (Firefox/Tools > Web Developer) to see if content fails to load or is possibly blocked.

Use "Command + Shift + R" to reload the page and bypass the cache to generate a fresh log.


Clear the cache and remove cookies from websites that cause problems.

"Clear the Cache":

  • Firefox > Preferences > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from websites that cause problems:

  • Firefox > Preferences > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox menu button/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox menu button/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window