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I can not open yahoo mail with this upgrade. I get "The requested URL not found" every time I try

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Since upgrading to Firefox 4 I can not open my yahoo e-mail account. I can read most articles in yahoo but every time I try to check my e-mail (or anybody tries to check theirs) we get the same message "The requested URL not found" I am very disappointed because I am forced to use explorer to check my e-mail and I have not used explorer for years because I don't trust it. Please help.

Since upgrading to Firefox 4 I can not open my yahoo e-mail account. I can read most articles in yahoo but every time I try to check my e-mail (or anybody tries to check theirs) we get the same message "The requested URL not found" I am very disappointed because I am forced to use explorer to check my e-mail and I have not used explorer for years because I don't trust it. Please help.

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

  • "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
  • "Remove the Cookies" from sites causing problems: Tools > Options > Privacy > Cookies: "Show Cookies"
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This did nothing. I am still having the same problem