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I get a bad request message when trying to open my mail in Yahoo.

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I keep getting a "bad request" message when trying to open my mail in Yahoo.

I keep getting a "bad request" message when trying to open my mail in Yahoo.

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This issue can be caused by corrupted cookies.

  • "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"

If clearing the cookies doesn't help then it is possible that the file cookies.sqlite that stores the cookies is corrupted.

Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete cookies.sqlite-journal and cookies.txt, if they exist, in the Profile Folder in case the file cookies.sqlite got corrupted.