Credential error to log on vrayspawner 2016

Hello,
trying to installed the last version of 3.504 on the servers, i got this credential.
Putting the same value as the one in the vrayspawner 2014 doesn’t work, I got a log in error!
What should I do?

I tried to bypass it with a command prompt, but nothing happens!

Just to make sure, the credential should be the same than the one on windows log in?

I change the windowns login password, just to make sure that the password was not the problem. But the problem remain, I can’t log on vray spawner 2016.
Same for all the server, could it be a problem with this vray version?

Fix, the credential don’t need the .\ before the user name.

Glad to hear you figure it out by yourself, and thank you very much for sharing the solution.