code signing


As of Windows 11, version 21H2, Microsoft introduced the Azure Code Signing requirement for all Antivirus and Anti-Malware Protection vendors.

Azure Code Signing ensures that your Windows workload is secure and compliant by establishing the identity of the application publisher. It also verifies application integrity, ensuring it has not been modified since publication.

Affected environments: 

The issue happens on the following operating systems when when the SHA2/SHA256 support patches from Microsoft have not been installed, or have been installed only recently (after encountering problems with backups):