Hi Friends,
Here I will provide How to enable the Yahoo Chat in Old Yahoo Mail account.
For that you have to upgrade your yahoo mail to Mail Classic Account and to do that I have provided you the screen shot of each step.
Open your Yahoo mail account!
Select Mail Classic option Available in your Yahoo mail account. Once you switch to Mail Classic Click on InBox
On the Right hand side of the Mail Account, You would get the option Upgrade to the all new Mail Account
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