About this update The Windows Root Certificate Program enables trusted root certificates to be distributed automatically in Windows. Usually, a client computer polls root certificate updates one time a week. After you apply this update, the client computer can receive urgent root certificate updates within 24 hours. Known issue

An administrator can use this tool to select the set of trusted root certificates, export them to a serialized certificate store, and distribute them by using Group Policy. For more information, see the New Verbs in Certutil section in this KB article.

This includes updates to Windows Boot Manager, Secure Boot databases and revocation lists, and fixes for newly discovered vulnerabilities in the boot chain. As new threats emerge, a device in this expired state becomes progressively less protected.

Découvrez le chiffrement d’appareil BitLocker dans Windows et comment l’activer.

There are occasions where Claims To Windows Token Service (c2WTS) is unable to start automatically after a reboot. The Application Event Log will also show that c2WTS timed out, and, in a later entry that Cryptographic Services Service was started.

Cette mise à jour résout les problèmes de sécurité de votre système d’exploitation Windows. Remarque : Pour afficher la liste des problèmes résolus, cliquez ou appuyez sur le nom du système d’exploitation pour développer la section réductible.

Most Windows devices will receive the updated certificates automatically, and many OEMs provide firmware updates when needed. Keeping your device current with these updates helps ensures it can continue receiving the full set of security protections that Secure Boot is designed to provide.