sql - Reportbuilder - Test Connection Succeeds but still get Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON' -

i'm setting connection in report builder , goes plans

but after accepting connection properties, when try , test it gives me error.

why report builder default login credentials?? logged on user has access database , i've confirmed it. (logged onto sql credentials.)

might there im not seeing?

click on credentials tab , make sure credentials used log on correct. make sure use windows credentials checked.