diff --git a/config/db.php b/config/db.php
index af65d62..d2f7f6a 100644
--- a/config/db.php
+++ b/config/db.php
@@ -4,7 +4,9 @@ mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
 
 // Check if first_start.php installer file exists and database setup is needed
 $first_start_path = ROOT_DIR . "first_start.php";
-if (file_exists($first_start_path) && basename($_SERVER['SCRIPT_FILENAME'] ?? '') !== 'first_start.php') {
+$first_start_completed = file_exists(ROOT_DIR . "first_start.php.completed") || file_exists(ROOT_DIR . "config/installed.lock");
+
+if (file_exists($first_start_path) && !$first_start_completed && basename($_SERVER['SCRIPT_FILENAME'] ?? '') !== 'first_start.php') {
     // Check connection first
     try {
         $test_conn = @new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
@@ -93,11 +95,16 @@ try {
     }
 
 } catch (mysqli_sql_exception $e) {
-    if (file_exists($first_start_path) && basename($_SERVER['SCRIPT_FILENAME'] ?? '') !== 'first_start.php') {
+    if (file_exists($first_start_path) && !$first_start_completed && basename($_SERVER['SCRIPT_FILENAME'] ?? '') !== 'first_start.php') {
         header("Location: first_start.php");
         exit;
     }
-    include(PAGES_FOLD . "db-error.php");
+    $pages_fold = defined('PAGES_FOLD') ? PAGES_FOLD : ROOT_DIR . "pages/";
+    if (file_exists($pages_fold . "db-error.php")) {
+        include($pages_fold . "db-error.php");
+    } else {
+        echo "Database connection error: " . htmlspecialchars($e->getMessage());
+    }
     debugStatusMes("Database setup error: " . $e->getMessage(), "High");
     die();
 }
diff --git a/config/init.php b/config/init.php
index 5714e8f..702afbb 100644
--- a/config/init.php
+++ b/config/init.php
@@ -5,14 +5,22 @@
   switch($env){
     /*------ DON'T TOUCH THIS PART ------ */
     case "generic":
-      $doc_root = !empty($_SERVER['DOCUMENT_ROOT']) ? $_SERVER['DOCUMENT_ROOT'] : dirname(__DIR__);
-      define('WEB_ROOT', $doc_root);
+      $app_dir = str_replace('\\', '/', dirname(__DIR__));
+      $doc_root = !empty($_SERVER['DOCUMENT_ROOT']) ? str_replace('\\', '/', $_SERVER['DOCUMENT_ROOT']) : '';
+
+      $base_url_path = '';
+      if (!empty($doc_root) && strpos($app_dir, $doc_root) === 0) {
+          $base_url_path = substr($app_dir, strlen($doc_root));
+      }
+      $base_url_path = rtrim(str_replace('\\', '/', $base_url_path), '/');
+
       $host = !empty($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : 'localhost';
       define('DOMAIN', $host);
       $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https://' : 'http://';
       define('FULL_DOMAIN', $protocol . DOMAIN);
-      define("ROOT_URL", $protocol . DOMAIN );
-      define("ROOT_DIR", rtrim(WEB_ROOT, '/') . "/");
+      define("ROOT_URL", $protocol . DOMAIN . $base_url_path);
+      define("ROOT_DIR", $app_dir . "/");
+      define('WEB_ROOT', ROOT_DIR);
       break;
     /* ----------------------------------- */
     default:
diff --git a/config/settings.php b/config/settings.php
index 3968c35..eaabb3f 100644
--- a/config/settings.php
+++ b/config/settings.php
@@ -8,8 +8,8 @@ $db_needed="yes";
 $db_debug="yes";
 $db_host="localhost";
 $db_name="sld_blocknotes_db";
-$db_user="root";
-$db_pass="";
+$db_user="simone";
+$db_pass="Angela";
 
 //-------------------------------------------------------------------------------------
 //                        --- DON'T CHANGE ALL THE CODE BELOW!!! ---                        
diff --git a/first_start.php b/first_start.php
old mode 100644
new mode 100755
index d4164fe..ace1c6f
--- a/first_start.php
+++ b/first_start.php
@@ -11,6 +11,17 @@ if (session_status() === PHP_SESSION_NONE) {
 define("ROOT_DIR", __DIR__ . "/");
 require_once(__DIR__ . "/functions/lang.php");
 
+// Check if installation is already completed or lock file exists
+$installed_lock = __DIR__ . "/config/installed.lock";
+$completed_file = __DIR__ . "/first_start.php.completed";
+
+if (file_exists($completed_file) || file_exists($installed_lock)) {
+    header("Location: index.php?page=login");
+    exit;
+}
+
+
+
 // Handle language selection
 if (isset($_GET['set_lang'])) {
     set_active_lang($_GET['set_lang']);
@@ -142,14 +153,18 @@ if ($db_needed == "yes"){
   require_once(CONFIG_FOLD . "db.php");
 }
 ?>';
-                file_put_contents(__DIR__ . "/config/settings.php", $settings_file_content);
+                if (@file_put_contents(__DIR__ . "/config/settings.php", $settings_file_content) === false) {
+                    $msg_error = __('err_setup_write_permissions');
+                } else {
+                    // Rename first_start.php to first_start.php.completed to prevent installer re-entry
+                    if (!@rename(__FILE__, __DIR__ . "/first_start.php.completed")) {
+                        @file_put_contents(__DIR__ . "/config/installed.lock", date('Y-m-d H:i:s'));
+                    }
 
-                // Rename first_start.php to first_start.php.completed to prevent installer re-entry
-                @rename(__FILE__, __DIR__ . "/first_start.php.completed");
-
-                // Redirect to login page
-                header("Location: index.php?page=login&installed=1");
-                exit;
+                    // Redirect to login page
+                    header("Location: index.php?page=login&installed=1");
+                    exit;
+                }
             }
         }
     }
diff --git a/functions/lang.php b/functions/lang.php
index 885bbeb..ad74512 100644
--- a/functions/lang.php
+++ b/functions/lang.php
@@ -200,7 +200,8 @@ function get_translations() {
             'err_setup_db_fields' => 'Compila tutti i dati di connessione al Database MySQL.',
             'err_setup_owner_fields' => 'Inserisci username e password per l\'utente Owner (Proprietario).',
             'err_setup_admin_fields' => 'Inserisci username e password per il primo utente Admin.',
-            'err_setup_same_user' => 'L\'utente Owner e l\'utente Admin devono avere nomi utente differenti.'
+            'err_setup_same_user' => 'L\'utente Owner e l\'utente Admin devono avere nomi utente differenti.',
+            'err_setup_write_permissions' => 'Impossibile scrivere il file config/settings.php. Verifica i permessi di scrittura sulla cartella.'
         ],
 
         'en' => [
@@ -365,7 +366,8 @@ function get_translations() {
             'err_setup_db_fields' => 'Please fill in all MySQL database connection fields.',
             'err_setup_owner_fields' => 'Please enter username and password for the Owner user.',
             'err_setup_admin_fields' => 'Please enter username and password for the first Admin user.',
-            'err_setup_same_user' => 'Owner user and Admin user must have different usernames.'
+            'err_setup_same_user' => 'Owner user and Admin user must have different usernames.',
+            'err_setup_write_permissions' => 'Unable to write to config/settings.php file. Check folder write permissions.'
         ],
 
         'es' => [
@@ -530,7 +532,8 @@ function get_translations() {
             'err_setup_db_fields' => 'Por favor completa todos los campos de conexión a la base de datos MySQL.',
             'err_setup_owner_fields' => 'Por favor introduce nombre de usuario y contraseña para el Propietario.',
             'err_setup_admin_fields' => 'Por favor introduce nombre de usuario y contraseña para el primer Admin.',
-            'err_setup_same_user' => 'El usuario Propietario y el usuario Admin deben tener nombres diferentes.'
+            'err_setup_same_user' => 'El usuario Propietario y el usuario Admin deben tener nombres diferentes.',
+            'err_setup_write_permissions' => 'No se pudo escribir en el archivo config/settings.php. Verifica los permisos de escritura.'
         ],
 
         'fr' => [
@@ -695,7 +698,8 @@ function get_translations() {
             'err_setup_db_fields' => 'Veuillez remplir tous les champs de connexion à la base de données MySQL.',
             'err_setup_owner_fields' => 'Veuillez entrer le nom d\'utilisateur et le mot de passe pour le Propriétaire.',
             'err_setup_admin_fields' => 'Veuillez entrer le nom d\'utilisateur et le mot de passe pour le premier Admin.',
-            'err_setup_same_user' => 'L\'utilisateur Propriétaire et l\'utilisateur Admin doivent avoir des noms différents.'
+            'err_setup_same_user' => 'L\'utilisateur Propriétaire et l\'utilisateur Admin doivent avoir des noms différents.',
+            'err_setup_write_permissions' => 'Impossible d\'écrire dans le fichier config/settings.php. Vérifiez les permissions de dossier.'
         ]
     ];
 }