authentication failure error after update 6/6/15...can't use

Authentication failure error

Hello, can you please be more specific with the description of the issue, what is the exact application’s behaviour? Are you seeing any errors on your computer? What mail service are you using with eM Client? What version of eM Client are you currently using on your computer, can you please check the exact release number in Help > About?

Can you make a screenshot of the issue and submit it to us here on the forum?

Thank you,