microsoft ca expiration

The microsoft ca expiration tag covers discussions about the upcoming expiration of key Microsoft Issuing Certification Authorities that have digitally signed Windows binaries and drivers for over a decade. This change affects Windows Application Control for Business (formerly WDAC), as Microsoft has introduced new CA handling logic to maintain trust in signed components. IT administrators and security professionals need to understand how these CA expirations impact application control policies, driver signing validation, and overall system integrity in enterprise environments. The tag focuses on practical implications for managing trust in Windows components after the certificate authorities expire.