diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index e9872ea819..0d8f66607c 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -1456,6 +1456,7 @@ phutil_register_library_map(array(
     'PhabricatorSettingsPanelSearchPreferences' => 'applications/settings/panel/PhabricatorSettingsPanelSearchPreferences.php',
     'PhabricatorSetupCheck' => 'applications/config/check/PhabricatorSetupCheck.php',
     'PhabricatorSetupCheckAPC' => 'applications/config/check/PhabricatorSetupCheckAPC.php',
+    'PhabricatorSetupCheckAuth' => 'applications/config/check/PhabricatorSetupCheckAuth.php',
     'PhabricatorSetupCheckBaseURI' => 'applications/config/check/PhabricatorSetupCheckBaseURI.php',
     'PhabricatorSetupCheckBinaries' => 'applications/config/check/PhabricatorSetupCheckBinaries.php',
     'PhabricatorSetupCheckDatabase' => 'applications/config/check/PhabricatorSetupCheckDatabase.php',
@@ -3324,6 +3325,7 @@ phutil_register_library_map(array(
     'PhabricatorSettingsPanelSSHKeys' => 'PhabricatorSettingsPanel',
     'PhabricatorSettingsPanelSearchPreferences' => 'PhabricatorSettingsPanel',
     'PhabricatorSetupCheckAPC' => 'PhabricatorSetupCheck',
+    'PhabricatorSetupCheckAuth' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckBaseURI' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckBinaries' => 'PhabricatorSetupCheck',
     'PhabricatorSetupCheckDatabase' => 'PhabricatorSetupCheck',
diff --git a/src/applications/auth/controller/PhabricatorAuthController.php b/src/applications/auth/controller/PhabricatorAuthController.php
index 182a210e4a..aa23034a4b 100644
--- a/src/applications/auth/controller/PhabricatorAuthController.php
+++ b/src/applications/auth/controller/PhabricatorAuthController.php
@@ -29,6 +29,28 @@ abstract class PhabricatorAuthController extends PhabricatorController {
 
   }
 
+  /**
+   * Returns true if this install is newly setup (i.e., there are no user
+   * accounts yet). In this case, we enter a special mode to permit creation
+   * of the first account form the web UI.
+   */
+  protected function isFirstTimeSetup() {
+    // If there are any auth providers, this isn't first time setup, even if
+    // we don't have accounts.
+    if (PhabricatorAuthProvider::getAllEnabledProviders()) {
+      return false;
+    }
+
+    // Otherwise, check if there are any user accounts. If not, we're in first
+    // time setup.
+    $any_users = id(new PhabricatorPeopleQuery())
+      ->setViewer(PhabricatorUser::getOmnipotentUser())
+      ->setLimit(1)
+      ->execute();
+
+    return !$any_users;
+  }
+
 
   /**
    * Log a user into a web session and return an @{class:AphrontResponse} which
diff --git a/src/applications/auth/controller/PhabricatorAuthRegisterController.php b/src/applications/auth/controller/PhabricatorAuthRegisterController.php
index 86c509576f..85324ae090 100644
--- a/src/applications/auth/controller/PhabricatorAuthRegisterController.php
+++ b/src/applications/auth/controller/PhabricatorAuthRegisterController.php
@@ -20,10 +20,15 @@ final class PhabricatorAuthRegisterController
       return $this->renderError(pht('You are already logged in.'));
     }
 
+    $is_setup = false;
     if (strlen($this->accountKey)) {
       $result = $this->loadAccountForRegistrationOrLinking($this->accountKey);
       list($account, $provider, $response) = $result;
       $is_default = false;
+    } else if ($this->isFirstTimeSetup()) {
+      list($account, $provider, $response) = $this->loadSetupAccount();
+      $is_default = true;
+      $is_setup = true;
     } else {
       list($account, $provider, $response) = $this->loadDefaultAccount();
       $is_default = true;
@@ -213,6 +218,10 @@ final class PhabricatorAuthRegisterController
               $editor->changePassword($user, $envelope);
             }
 
+            if ($is_setup) {
+              $editor->makeAdminUser($user, true);
+            }
+
             $account->setUserPHID($user->getPHID());
             $provider->willRegisterAccount($account);
             $account->save();
@@ -319,24 +328,53 @@ final class PhabricatorAuthRegisterController
           ->setError($e_realname));
     }
 
-    $form->appendChild(
-      id(new AphrontFormSubmitControl())
-        ->addCancelButton($this->getApplicationURI('start/'))
-        ->setValue(pht('Register Phabricator Account')));
+    $submit = id(new AphrontFormSubmitControl());
 
-    $title = pht('Phabricator Registration');
+    if ($is_setup) {
+      $submit
+        ->setValue(pht('Create Admin Account'));
+    } else {
+      $submit
+        ->addCancelButton($this->getApplicationURI('start/'))
+        ->setValue(pht('Register Phabricator Account'));
+    }
+
+
+    $form->appendChild($submit);
 
     $crumbs = $this->buildApplicationCrumbs();
-    $crumbs->addCrumb(
-      id(new PhabricatorCrumbView())
-        ->setName(pht('Register')));
-    $crumbs->addCrumb(
-      id(new PhabricatorCrumbView())
-        ->setName($provider->getProviderName()));
+
+    if ($is_setup) {
+      $crumbs->addCrumb(
+        id(new PhabricatorCrumbView())
+          ->setName(pht('Setup Admin Account')));
+        $title = pht('Welcome to Phabricator');
+    } else {
+      $crumbs->addCrumb(
+        id(new PhabricatorCrumbView())
+          ->setName(pht('Register')));
+      $crumbs->addCrumb(
+        id(new PhabricatorCrumbView())
+          ->setName($provider->getProviderName()));
+        $title = pht('Phabricator Registration');
+    }
+
+    $welcome_view = null;
+    if ($is_setup) {
+      $welcome_view = id(new AphrontErrorView())
+        ->setSeverity(AphrontErrorView::SEVERITY_NOTICE)
+        ->setTitle(pht('Welcome to Phabricator'))
+        ->appendChild(
+          pht(
+            'Installation is complete. Register your administrator account '.
+            'below to log in. You will be able to configure options and add '.
+            'other authentication mechanisms (like LDAP or OAuth) later on.'));
+    }
 
     return $this->buildApplicationPage(
       array(
         $crumbs,
+        $welcome_view,
         $error_view,
         $form,
       ),
@@ -381,6 +419,13 @@ final class PhabricatorAuthRegisterController
     return array($account, $provider, $response);
   }
 
+  private function loadSetupAccount() {
+    $provider = new PhabricatorAuthProviderPassword();
+    $account = $provider->getDefaultExternalAccount();
+    $response = null;
+    return array($account, $provider, $response);
+  }
+
   private function loadProfilePicture(PhabricatorExternalAccount $account) {
     $phid = $account->getProfileImagePHID();
     if (!$phid) {
diff --git a/src/applications/auth/controller/PhabricatorAuthStartController.php b/src/applications/auth/controller/PhabricatorAuthStartController.php
index 7e605174c1..d6cde983c1 100644
--- a/src/applications/auth/controller/PhabricatorAuthStartController.php
+++ b/src/applications/auth/controller/PhabricatorAuthStartController.php
@@ -44,6 +44,13 @@ final class PhabricatorAuthStartController
     }
 
     if (!$providers) {
+      if ($this->isFirstTimeSetup()) {
+        // If this is a fresh install, let the user register their admin
+        // account.
+        return id(new AphrontRedirectResponse())
+          ->setURI($this->getApplicationURI('/register/'));
+      }
+
       return $this->renderError(
         pht(
           "This Phabricator install is not configured with any enabled ".
diff --git a/src/applications/config/check/PhabricatorSetupCheckAuth.php b/src/applications/config/check/PhabricatorSetupCheckAuth.php
new file mode 100644
index 0000000000..9cc2348aa6
--- /dev/null
+++ b/src/applications/config/check/PhabricatorSetupCheckAuth.php
@@ -0,0 +1,27 @@
+<?php
+
+final class PhabricatorSetupCheckAuth extends PhabricatorSetupCheck {
+
+  protected function executeChecks() {
+    $providers = PhabricatorAuthProvider::getAllEnabledProviders();
+    if (!$providers) {
+      $message = pht(
+        'You have not configured any authentication providers yet. You '.
+        'should add a provider (like username/password, LDAP, or GitHub '.
+        'OAuth) so users can register and log in. You can add and configure '.
+        'providers %s.',
+        phutil_tag(
+          'a',
+          array(
+            'href' => '/auth/',
+          ),
+          pht('using the "Auth" application')));
+
+      $this
+        ->newIssue('auth.noproviders')
+        ->setShortName(pht('No Auth Providers'))
+        ->setName(pht('No Authentication Providers Configured'))
+        ->setMessage($message);
+    }
+  }
+}