Question

How to integrate Question2Answer with Single Sign-on?

Answer 1

Step by step information has been given in this article -

http://www.question2answer.org/single-sign-on.php

Also In the qa-external-users.php file in the qa-external folder there are many examples are available .

Follow up with these , definitely you can set it up and running .

 ###EDIT#####

As suggested by maxjtechno in below comment - 

you could give  a try to this video . :) 

http://www.youtube.com/watch?v=ZWxKXZW01ms

Good Luck :)

Comments

Thanks for this info @maxjtechno . Sorry @RajaDurai , I was not aware of this .. Give a try to with this video .
**I will update my answer with this

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However I think that the steps that amiyasahu.com gave you are already complete....

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Is that video really tutorial of SSO for Q2A? I feel that video is just thing for installing Q2A into wordpress.

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yes that info might help him if he is not aware of that ..