If you are getting this error message - Temporary error: ymws:Server.MailboxOpenFailed
It is recommended that you try installing the latest versions of the Internet Explorer and/or Mozilla Firefox web browsers optimized for Yahoo.
If that doesn't work the troubleshooting steps in this guide can help to fix software conflicts between your computer and Yahoo Mail:
http://www.emailquestions.com/yahoo...nts-connection-problems-browser-timeouts.html
It is recommended that you try installing the latest versions of the Internet Explorer and/or Mozilla Firefox web browsers optimized for Yahoo.
If that doesn't work the troubleshooting steps in this guide can help to fix software conflicts between your computer and Yahoo Mail:
http://www.emailquestions.com/yahoo...nts-connection-problems-browser-timeouts.html