I'm not able to log into the Yahoo Mail app for Windows 10 using a particular att.net e-mail address. I can log on to it using my other att.net e-mail addresses, but not the particular one that I perfer using. I have no problems using it when logging in from the Yahoo Mail web site and on the Yahoo Mail mobile app, but it seems that Yahoo Mail app for Windows 10 is blocking my login attemp. I am getting the following error. "Unable to log on" Why is your mail app for Windows 10 blocking this particular att.net e-mail address from logging in for and how do I fix this?
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