Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Als je Windows 10 gebruikt, lees dan dit artikel.

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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When I try to view my webmail in yahoo.com on Firefox, I get a "Bad Request" message on the tab and no mail.

Firefox
cor-el beantwoord
whorton5
whorton5

Yahoo Mail works fine in Safari, but when I try to click on my Yahoo Mail from the web in Firefox, I get a blank tab with the message "Bad Request" on the tab.

Yahoo Mail works fine in Safari, but when I try to click on my Yahoo Mail from the web in Firefox, I get a blank tab with the message "Bad Request" on the tab.

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cor-el
cor-el
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Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Firefox > Preferences > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove the Cookies" from sites causing problems:

  • Firefox > Preferences > Privacy > Cookies: "Show Cookies"
whorton5
whorton5 Vraageigenaar

It works when I dug into and deleted the Yahoo.com cookie. Why did that work? Thanks. Hope it stays fixed

cor-el
cor-el
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You're welcome

This issue is usually caused by corrupted cookies that the server doesn't understand and clearing the cookies from the affected website usually works to fix it. In severe cases it may be necessary to delete the cookies.sqlite file that stores the cookies.