Safe
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)

0ae3b998-9a38-4b72-a4c4-06849441518d_Servicing-Stack.dll x64
24.32 KB
69fe178f-26e7-43a9-aa7d-2b616b672dde_eventlogservice.dll x64
24.3 KB
6bea57fb-8dfb-4177-9ae8-42e8b3529933_RuntimeDeviceInstall.dll x64
24.32 KB
aadauthhelper.dll x64
464 KB
aadauthhelper.dll x86
344.5 KB
aadcloudap.dll x64
992 KB
aadjcsp.dll x64
108 KB
aadtb.dll x64
1.3 MB
aadtb.dll x86
1.11 MB
aadWamExtension.dll x64
228.3 KB
aadWamExtension.dll x86
170.83 KB
AboutSettingsHandlers.dll x64
476.32 KB
AboveLockAppHost.dll x64
408 KB
AboveLockAppHost.dll x86
323.5 KB
accessibility.dll x86
36.04 KB
accessibilitycpl.dll x64
268 KB
accessibilitycpl.dll x86
202.5 KB
AcGenral.dll x64
387.72 KB
AcGenral.dll x86
2.34 MB
AcLayers.dll x64
356 KB
AcLayers.dll x86
397 KB
acledit.dll x64
28 KB
acledit.dll x86
9 KB
aclui.dll x64
560 KB
aclui.dll x86
421 KB
acmigration.dll x64
393.35 KB
ACPBackgroundManagerPolicy.dll x64
216 KB
acppage.dll x64
112 KB
acppage.dll x86
70.5 KB
acproxy.dll x64
36 KB
AcSpecfc.dll x64
100 KB
AcSpecfc.dll x86
461 KB
ActionCenter.dll x64
364 KB
ActionCenter.dll x86
272 KB
ActionCenterCPL.dll x64
156 KB
ActionCenterCPL.dll x86
105.5 KB
ActionQueue.dll x64
208.32 KB
ActivationClient.dll x64
176 KB
ActivationClient.dll x86
115.5 KB
ActivationManager.dll x64
916 KB
ActivationManager.dll x86
728.5 KB
activeds.dll x64
292 KB
activeds.dll x86
216 KB
actxprxy.dll x64
604 KB
actxprxy.dll x86
259 KB
AcWinRT.dll x64
84 KB
AcWinRT.dll x86
69 KB
acwow64.dll x86
38 KB
AcXtrnal.dll x64
36 KB
AcXtrnal.dll x86
86 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.