signtool sign /?
If the ActiveX Signer Installer fails to run, try these quick fixes: activex signer installer
Installing cryptographic providers and updating the registry requires local administrator privileges. signtool sign /
To understand why a clean installation matters, know that the installer modifies specific registry keys: embedded in the installer’s metadata:
These often include an all-in-one ActiveX signer installer that bundles the cryptographic providers without the rest of the Windows SDK.
Government and military portals frequently use ActiveX to interface with physical ID cards (CAC or PIV cards). How the Installation Process Works
He didn’t tell her about the log file he’d seen just before shutting down—a note from the original developer, dated 2009, embedded in the installer’s metadata: