How many of U R having mail.yahoo.com not working more than half the time?

[Wm]

Hmm. We’re having trouble finding that site.

We can’t connect to the server at mail.yahoo.com.

If that address is correct, here are three other things you can try:

Try again later.
Check your network connection.
If you are connected but behind a firewall, check that Firefox has permission to access the Web.

[Lionsroar]

I have a yahoo email I rarely use.  I haven't checked it in over a month.

[Wm]

This what happen when I tried a different browser. Edge

Hmmm… can't reach this page

Check if there is a typo in mail.yahoo.com.

• If spelling is correct, try running Windows Network Diagnostics.

DNS_PROBE_FINISHED_NXDOMAIN

[Wm]

All, AT&T and Yahoo are making your email more secure. This new security implementation, also known as Open Authentication (OAuth), works by encrypting your credentials to better protect them from hackers.. During this change, you may have trouble logging into some email applications, especially if you cannot remember your password.You will find steps that will help you address your sign in woes. https://forums.att.com/conversations/att-internet-email-security/em...