The Xbox Offline System Update (OSU) process allows you to update your console by downloading a file to a USB flash drive and then installing that file directly onto your Xbox Series X|S or Xbox One console.

See how to view the details for signatures and certificates.

Alpha Ring (2506.250612-1215) Hey Xbox Insiders! We are releasing a new Xbox Update Preview to the Alpha ring today. Continue reading below to learn all about what's included with this update.

了解如何離線更新您的 Xbox 主機。

You can often view a protected file by simply opening it. For example, you might double-click an attachment in an email message, a document in File Explorer, or a link to a file and be able to open the protected file. If you are trying to open a protected file that has a .pfile name extension, like a .ppng, you will need to use the Microsoft Purview Information Protection viewer or the Azure ...

This page features a list of common error codes and solutions. Learn how to find your error code quickly.

Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and ...

Xbox Support ... Xbox Support

Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

Check Xbox services, games, and apps for service outages or functionality issues.