Summary The /INTEGRITYCHECK linker option provides Windows kernel digital signature verification for user mode Portable Executables (PE) files. This linker option is required for anti-malware and anti-cheat scenarios to register components with the Windows Security Center. You must sign IntegrityCheck-linked user mode PEs using Trusted Signing (formerly Azure Code Signing). The cross-signing ...

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.

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

What is Secure Boot? Secure Boot is a security feature in Unified Extensible Firmware Interface (UEFI) based firmware that helps ensure that only trusted software runs during a device's boot (start) sequence. It works by verifying the digital signature of pre-boot software against a set of trusted digital certificates (also known as certificate authority or CA) stored in the device's firmware ...

Learn how to identify and open encrypted and protected emails no matter what email client you're using.

Introduction LDAP channel binding and LDAP signing provide ways to increase the security for communications between LDAP clients and Active Directory domain controllers. A set of unsafe default configurations for LDAP channel binding and LDAP signing exist on Active Directory domain controllers that let LDAP clients communicate with them without enforcing LDAP channel binding and LDAP signing ...

Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

This article describes how you can digitally sign a macro project on Windows by using a certificate. If you don't already have a digital certificate, you'll need to get one.

This article contains information about the restrictions and limitations that apply to files, file names and file types when syncing with OneDrive for home, OneDrive for work or school or SharePoint in Microsoft 365.

More help If you're using a work or school account and couldn't install classic Outlook following the steps above, contact the IT admin in your organization for assistance.