I have lost my contact list on both Yahoo e-mail accounts. Says "0" contacts and gives an error message " -99999"
Using windows 10. Recently e-mail contacts disappeared and it will not allow me to add contacts to start a new list. Shows error code -99999. Makes not difference which browser I open the e-mail account in. I think it might have happened with a Windows 10 up date, but don't really know. Also, Yahoo.com will not open in any of my browsers (Explorer, Firefox or Google) HELP!
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This isn't related to Thunderbird. Contact Yahoo for help about the lost contacts. If you have any problems with Firefox please start a new topic in the Firefox forum. https://support.mozilla.org/questions/new