Fixes the user password validation to ensure it obeys what the membership provider's are configured for.

src/Umbraco.Web/Install/InstallSteps/NewInstallStep.cs

@@ -72,10 +72,25 @@ namespace Umbraco.Web.Install.InstallSteps
             admin.Username = user.Email.Trim();
 
             _applicationContext.Services.UserService.Save(admin);
-
+            
             return null;
         }
 
+        /// <summary>
+        /// Return a custom view model for this step
+        /// </summary>
+        public override object ViewModel
+        {
+            get
+            {
+                return new
+                {
+                    minCharLength = Membership.Providers[Constants.Conventions.User.UmbracoUsersProviderName].MinRequiredPasswordLength,
+                    minNonAlphaNumericLength = Membership.Providers[Constants.Conventions.User.UmbracoUsersProviderName].MinRequiredNonAlphanumericCharacters
+                };
+            }
+        }
+
         public override string View
         {
             get { return RequiresExecution(null)

src/Umbraco.Web/Install/Models/InstallSetupStep.cs

@@ -57,6 +57,12 @@ namespace Umbraco.Web.Install.Models
         [DataMember(Name = "view")]
         public virtual string View { get; private set; }
 
+        /// <summary>
+        /// The view model used to render the view, by default is null but can be populated
+        /// </summary>
+        [DataMember(Name = "model")]
+        public virtual object ViewModel { get; private set; }
+
         [DataMember(Name = "description")]
         public string Description { get; private set; }