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Free

Windows System Components

Published by Microsoft

Core Windows system DLLs that are part of the operating system. These files should not normally be replaced manually.

Why You Need This

System DLLs like kernel32.dll, ntdll.dll, and user32.dll are core Windows components. If these are missing or corrupted, you should run Windows System File Checker (sfc /scannow) or repair your Windows installation rather than downloading individual files.

DLLs Included (4795)

AppVEntSubsystems32.dll x86
1.46 MB
AppVEntSubsystems64.dll x64
1.94 MB
AppVEntVirtualization.dll x64
1.59 MB
appvetwclientres.dll x64
140 KB
appvetwsharedperformance.dll x64
228 KB
appvetwstreamingux.dll x64
20 KB
AppVFileSystemMetadata.dll x64
264.32 KB
AppVIntegration.dll x64
1.4 MB
AppVManifest.dll x64
897.35 KB
AppVOrchestration.dll x64
732.32 KB
AppVPolicy.dll x64
976.32 KB
AppVPublishing.dll x64
581.34 KB
AppVReporting.dll x64
656.32 KB
AppVScripting.dll x64
360.31 KB
AppVSentinel.dll x64
36.3 KB
AppVSentinel.dll x86
13.3 KB
AppVStreamingUX.dll x64
192.32 KB
AppVStreamMap.dll x64
228.32 KB
AppVTerminator.dll x64
40.33 KB
AppVTerminator.dll x86
18.32 KB
AppxAllUserStore.dll x64
393.34 KB
AppxAllUserStore.dll x86
293.35 KB
AppXApplicabilityBlob.dll x64
232 KB
AppxApplicabilityEngine.dll x64
264.32 KB
AppxApplicabilityEngine.dll x86
196.33 KB
AppXDeploymentClient.dll x64
1.07 MB
AppXDeploymentClient.dll x86
778.73 KB
AppXDeploymentExtensions.desktop.dll x64
2.47 MB
AppXDeploymentExtensions.onecore.dll x64
2.95 MB
AppXDeploymentExtensions.server.dll x64
512 KB
AppXDeploymentServer.dll x64
4.18 MB
AppxPackaging.dll x64
1.9 MB
AppxPackaging.dll x86
1.66 MB
AppxSip.dll x64
296 KB
AppxSip.dll x86
234.5 KB
AppxStreamingDataSourcePS.dll x64
44 KB
AppxSysprep.dll x64
144 KB
archiveint.dll x64
684 KB
archiveint.dll x86
570 KB
asferror.dll x64
12 KB
asferror.dll x86
2.5 KB
aspnet_counters.dll x64
32.05 KB
aspnet_counters.dll x64
32.78 KB
aspnet_counters.dll x86
29.48 KB
aspnet_counters.dll x86
29.52 KB
aspnet_filter.dll x64
43.05 KB
aspnet_filter.dll x86
38.98 KB
aspnet_isapi.dll x64
27.55 KB
aspnet_isapi.dll x86
26.27 KB
aspnet_perf.dll x64
48.5 KB

Download Official Installer

Recommended: Install the full package

These are core Windows system files. If corrupted, run sfc /scannow in Command Prompt as Administrator.

Official Microsoft download
Digitally signed installer
Installs all 4795 required DLLs

Don't Download Individual DLLs

Installing the full runtime package is always the correct solution. Individual DLL downloads rarely fix the underlying issue and can cause additional problems.