Cannot login into SEPM with AD authentication.

Hello,

I tried to login into the SEPM with my AD account but I'm receiving this error message:

"The administrator's user name or password is incorrect. Type a valid user name or password"

I read something here in another forum discussion but I can't login. The AD server is added to the console and I add a new domain instead the default one but nothing and there is another user that can login succesfully. Version is 12.1.4

Please help me to figure this out.

Regards