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when using firefox on yahoo and opening my mail it says Not Found The requested URL /dc/launch was not found on this server. How can this be fixed?

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when using firefox on yahoo and opening my mail it says Not Found The requested URL /dc/launch was not found on this server. How can this be fixed?

when using firefox on yahoo and opening my mail it says Not Found The requested URL /dc/launch was not found on this server. How can this be fixed?

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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 Cookies" from sites causing problems:

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

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

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Firefox cannot load websites but other programs can

Check and tell if its working.