How To Change Password Validation in ASP.Net MVC5 Identity 2 ?
Thanks
In addition to Anthony Chu's answer,
You may also need to change it in Models folder > AccountViewModel.cs > class RegisterViewModel (as well as class ResetPasswordViewModel)
Change "MinimumLength = 6" (need to scroll right)
[Required]
[StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "Password")]
public string Password { get; set; }