Having trouble setting _SESSION ids for login

so i have this sending to the next page but the next page doesn't recognize that the session id is valid: if (password_verify($password, $user_password)) { session_start(); session_regenerate_id(); $_SESSION['logged_in'] = true; $_SESSION['username'] = $user['username']; header('Location: ../pages/backpages/Root.php'); exit; } The next page recieving the session id i have looking like this: <?php session_start(); if (!isset($_SESSION['logged_in']) || $_SESSION['logged_in'] !== true) { header('Location: ../SignIn.php'); // Redirect to login if not logged in exit; } any idea why it doesnt let me set session ids or could it be something in database settings?