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)

Microsoft.Management.Infrastructure.Native.Unmanaged.dll x86
14.5 KB
microsoft.transactions.bridge.dll x86
378.98 KB
microsoft.transactions.bridge.dtc.dll x64
131.05 KB
microsoft.transactions.bridge.dtc.dll x86
129.28 KB
Microsoft.Uev.AgentDriverEvents.dll x64
32 KB
Microsoft.Uev.AppAgent.dll x64
2.15 MB
Microsoft.Uev.AppAgent.dll x86
1.64 MB
Microsoft.Uev.CabUtil.dll x64
53 KB
Microsoft.Uev.CmUtil.dll x64
208.5 KB
Microsoft.Uev.Common.dll x64
69 KB
Microsoft.Uev.Common.WinRT.dll x64
18 KB
Microsoft.Uev.CommonBridge.dll x64
1.13 MB
Microsoft.Uev.ConfigWrapper.dll x64
276 KB
Microsoft.Uev.EventLogMessages.dll x64
64 KB
Microsoft.Uev.LocalSyncProvider.dll x64
17.5 KB
Microsoft.Uev.ManagedEventLogging.dll x64
281 KB
Microsoft.Uev.Management.dll x64
21.5 KB
Microsoft.Uev.Management.WmiAccess.dll x64
23 KB
Microsoft.Uev.ModernAppAgent.dll x64
1.98 MB
Microsoft.Uev.ModernAppCore.dll x64
57.5 KB
Microsoft.Uev.ModernAppData.WinRT.dll x64
20.5 KB
Microsoft.Uev.ModernSync.dll x64
14 KB
Microsoft.Uev.MonitorSyncProvider.dll x64
8 KB
Microsoft.Uev.Office2010CustomActions.dll x64
60 KB
Microsoft.Uev.Office2010CustomActions.dll x86
37 KB
Microsoft.Uev.Office2013CustomActions.dll x64
728 KB
Microsoft.Uev.Office2013CustomActions.dll x86
528.5 KB
Microsoft.Uev.PrinterCustomActions.dll x64
740 KB
Microsoft.Uev.SmbSyncProvider.dll x64
11 KB
Microsoft.Uev.SyncCommon.dll x64
19 KB
Microsoft.Uev.SyncConditions.dll x64
7.5 KB
microsoft.visualbasic.activities.compiler.dll x64
3.77 MB
microsoft.visualbasic.activities.compiler.dll x86
2.76 MB
microsoft.visualbasic.activities.compilerui.dll x64
266.55 KB
microsoft.visualbasic.activities.compilerui.dll x86
266.55 KB
microsoft.visualbasic.compatibility.data.dll x86
115.02 KB
microsoft.visualbasic.compatibility.dll x86
486.78 KB
microsoft.visualbasic.dll x86
616.78 KB
microsoft.visualc.dll x86
29.7 KB
microsoft.visualc.stlclr.dll x86
49.73 KB
microsoft.win32.primitives.dll x86
29.05 KB
microsoft.windows.applicationserver.applications.dll x86
138.53 KB
Microsoft.Windows.DeploymentServices.ServerManager.Plugin.dll x64
273 KB
Microsoft.Windows.ServerManager.DhcpServer.Plugin.dll x64
179 KB
Microsoft.Windows.ServerManager.NetworkController.Plugin.dll x64
39 KB
Microsoft.Windows.ServerManager.NPASRole.Plugin.dll x64
328.5 KB
Microsoft.Windows.ServerManager.Plugins.Ipam.dll x64
5.39 MB
Microsoft.Windows.Storage.Core.dll x64
14.5 KB
Microsoft.Windows.Storage.Core.dll x86
14.5 KB
Microsoft.Windows.Storage.StorageBusCache.dll x64
14 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.