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---
title: AppLocker functions
description: This article for the IT professional lists the functions and security levels for AppLocker.
ms.localizationpriority: medium
ms.topic: conceptual
ms.date: 12/23/2023
---
# AppLocker functions
This article for the IT professional lists the functions and security levels for AppLocker.
## Functions
- [SaferGetPolicyInformation Function](/windows/win32/api/winsafer/nf-winsafer-safergetpolicyinformation)
- [SaferCreateLevel Function](/windows/win32/api/winsafer/nf-winsafer-safercreatelevel)
- [SaferCloseLevel Function](/windows/win32/api/winsafer/nf-winsafer-safercloselevel)
- [SaferIdentifyLevel Function](/windows/win32/api/winsafer/nf-winsafer-saferidentifylevel)
- [SaferComputeTokenFromLevel Function](/windows/win32/api/winsafer/nf-winsafer-safercomputetokenfromlevel)
- [SaferGetLevelInformation Function](/windows/win32/api/winsafer/nf-winsafer-safergetlevelinformation)
- [SaferRecordEventLogEntry Function](/windows/win32/api/winsafer/nf-winsafer-saferrecordeventlogentry)
- [SaferiIsExecutableFileType Function](/windows/win32/api/winsafer/nf-winsafer-saferiisexecutablefiletype)
## Security level ID
AppLocker uses the security level IDs to specify the access requirements to files listed in policies. The following table shows those security levels supported in AppLocker.
| Security level ID | AppLocker |
| --- | --- |
| SAFER_LEVELID_FULLYTRUSTED | Supported |
| SAFER_LEVELID_NORMALUSER | Not supported |
| SAFER_LEVELID_CONSTRAINED | Not supported |
| SAFER_LEVELID_UNTRUSTED | Not supported |
| SAFER_LEVELID_DISALLOWED | Supported |
> [!NOTE]
> URL zone ID isn't supported in AppLocker.
## Related articles
- [AppLocker technical reference](applocker-technical-reference.md)