We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Om de ûnderfining foar jo te ferbetterjen is tydlik de funksjonaliteit dan dizze website troch ûnderhâldswurk beheind. Wannear in artikel jo probleem net oplost en jo in fraach stelle wolle, kin ús stipemienskip jo helpe yn @FirefoxSupport op Twitter en /r/firefox op Reddit.

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

Why can't I open news articles on Yahoo using FireFox? I can open them using a different browser but get an error message when trying to use FireFox. The message is 400 bad request.

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Sorry, Bad Request. Your browser sent a request that this server could not understand.

Size of a request header field exceeds server limit.

Cookie: B=75kpq496lk13o&b=4&d=sCtogappYEIRcz6KBGzeoYZ9MqTV.a4yAp6fAQ--&s=ka&i=KBG0.9m3_RKQtWi41uCH; CH=Ahs0ZxveIG43DDRlM2sJzTTiDVor

Sorry, Bad Request. Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. Cookie: B=75kpq496lk13o&b=4&d=sCtogappYEIRcz6KBGzeoYZ9MqTV.a4yAp6fAQ--&s=ka&i=KBG0.9m3_RKQtWi41uCH; CH=Ahs0ZxveIG43DDRlM2sJzTTiDVor

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That issue can be caused by corrupted cookies.

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

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

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