The smart app control function introduced in Windows 11 system can prevent potentially malicious untrusted and unsigned applications with the help of artificial intelligence But the feature is not smart enough to block files developed by Microsoft itself. In this case, this feature blocks the harmless bootstrap DLL file in the windows SDK because it may not be signed, but the smart app control feature cannot fully connect to these sites
The official description of smart app control is
Intelligent application control increases the important protection of malware (including new threats and new threats) by preventing malicious or untrusted applications. Intelligent application control also helps block applications that may not be needed, which may cause the device to run slowly, display unexpected advertisements, provide unnecessary additional software, or perform other operations you don't want.
When you try in windows When running applications on, intelligent application control will check whether the security services supported by our intelligent cloud can make confident predictions about their security. If the service thinks the application is safe, intelligent application control will allow it to run. If the application is considered malicious or may not be needed, intelligent application control will prevent it.
If the security service cannot make a confident prediction of the application, the intelligent application control will check whether the application has a valid signature. If the application has a valid signature, the smart application control will allow it to run. If the application is not signed or the signature is invalid, the smart application control will treat it as untrusted and prevent it from being protected.