The email field is required and when filling it in, errors continue to appear in the field. this.dataForm = this.formBuilder.group({ email: new FormControl('', { validators: [ Validators.email, Validators.required ], asyncValidators: [ usernameValidator(this.usersService) ], // updateOn: 'change', }) }); Email field filled in and with error message Image of email field HTML Note: It does not give an error message in either the console or the terminal. Continue reading...