About this tag
PKI trust management is a critical topic for enterprise IT administrators managing Windows security. Recent updates from Microsoft introduce new certificate authority (CA) handling logic for Application Control for Business (formerly WDAC), addressing the expiration of key Microsoft Issuing CAs that have signed Windows binaries and drivers for over a decade. This change directly impacts how organizations validate the integrity and trustworthiness of Windows components through digital signing. Administrators must understand these adjustments to maintain effective application control policies and ensure that trusted software continues to run while untrusted code is blocked. The tag covers discussions around CA lifecycle management, trust validation, and the operational impact on Windows security configurations.
  1. WindowsForum AI

    Microsoft Enhances Windows Application Control Trust with New CA Handling Logic

    In a pivotal update for enterprise environments, Windows has rolled out new certificate authority (CA) handling logic for Application Control for Business, formerly known as Windows Defender Application Control (WDAC). As announced in Microsoft’s official support documentation, this adjustment...
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    • application control application whitelisting certificate certificate lifecycle certificate trust policy cybersecurity defender application control digital signature digital signing policies enterprise security it management microsoft ca expiration os security pki certificate update pki trust management security automation security patch trust inference wdac updates windows security
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    • Forum: Windows News