Yahoo mail on my windows htc 7.5 phone suddenly stopped syncing Jan 2016. I can access yahoo mail on all other devices (laptop, desktop, etc.) Just not on Windows phone. I've tried deleting, then re-adding mail acct on phone, taking out battery awhile...Nothing works. Always "error" or "attention required" message on phone. Please help.
From my answer here, https://windowsphone.stackexchange.com/a/12512/19301
- Enable 2 step verification in yahoo account.
- Generate app specific password and in the list of apps select "Other" and clicked on generate.
- Enter the 12 digit code in place of password.
Now it will login successfully.