function readOnly(count){ }
Starting November 20, the site will be set to read-only. On December 4, 2023,
forum discussions will move to the Trailblazer Community.
+ Start a Discussion
Jean-Michel GirardJean-Michel Girard 

problem with user authentication challenge

I have a problem figuring why i am receiving this notification when I am trying to complete the Secure Your Users' Identity challenge...Anyone can help?

User-added image
Raj VakatiRaj Vakati
The Salesforce user name is always unique and looks like you have same user name other instance or some else is using the same user name 

So create a unique user name 
The username is already in use in another salesforce org.
Try using another username like or

Hope this will help you.
Please select as best answer if it is useful
Deepali KulshresthaDeepali Kulshrestha
Hi Jean,

Username can only be used once.
If you're getting the 'Duplicate Username' error message,
you can either pick a new username or you can have the User
with the existing username change theirs.

I hope you find the above solution helpful. If it does, please mark as Best Answer to help others too.

Thanks and Regards,
Deepali Kulshrestha