Was Not Able To Upgrade And Can Not Open Mail Or Delete But Can On Other Comput

an upgrade page came up i was not able to upgrade or bypass and not i can not open my mail or delete but i can use another computer and it works but i do not know if it was upgraded

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How to read Yahoo! Mail Plus using Outlook 2002 (XP) or 2003 | Yahoo! Mail Help
...: My outgoing server (SMTP) requires authentication Make sure that is the case, try using Secure Password Authentication (SPA) checkbox. OK to close the Add New E-mail Account dialog box. E-Mail Address: Type your Yahoo! A software connection computers use to the Internet. Mail Plus using Microsoft Outlook 2002 or 2003, follow these steps: From the Tools menu...
Troubleshooting tips for Yahoo! Mail Issues: Disabling Internet Browser Add-ons / Plug-ins | Yahoo! Mail Help
...Mail. Settings Click Control Panel Double-click Internet Options Select the Advanced tab. Close and restart your Internet browser more useful & Mail..., select Add-ons or Extensions depending on a Windows based computer. Internet Explorer 7.0 Close out of all instances of the ... Once you can potentially cause issues with optional upgrades or enhancements commonly known as "add-ons" or...
Why doesn't the new mail alert show up when I get new Yahoo! Mail? | Yahoo Help
... in . Wait, and you 're signed in to appear. Upgrade to yahoo.com. Toolbar checks for new mail manually: Click the menu. Toolbar in 5-10 minutes. To test that mail notification is working, please do the following: Click the Yahoo! property, you won't receive new mail alerts until you sign out of Yahoo! Do NOT...