These viewers can open protected text files, protected image files, protected PDF files, and all files that have a .pfile file name extension on Windows, Android, or iOS.

iOS Android To install Authenticator on your iOS device Scan the QR code or download and install Authenticator from the Apple app store.

Find solutions for Xbox account and profile issues, manage settings, and get support for your Xbox experience.

iPhone, iPad or Android device: The passkey is saved to a phone or tablet. Notes: This option requires you to scan a QR code using your mobile device's camera (tap Use passkey when shown) or the QR scan button in Microsoft Authenticator (or similar) installed on your phone or tablet.

辅助功能领域，使标准产品适应独特需求的创造力永无止境。 采用 Xbox 无线控制器：我们发现了许多由第三方创建的巧妙 3D 打印修改，这些修改可帮助不同级别的玩家玩游戏。

This link between your iPhone® and PC gives you instant access to many things you love. Read and reply to text messages with ease, make and receive calls, and manage your iPhone® notifications right on your PC.

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.

If you're troubleshooting Office and would like to remove the license files on your Mac, you can use the license removal tool. This will completely remove all licenses for Microsoft 365 for Mac.

Training: Watch and learn how to use Outlook to recall and/or replace an email in Outlook if all your recipients are using Microsoft Exchange.

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.