Safe
Free

authui.dll

x86 Windows System
Verified

This is a Core Windows System File

authui.dll is a critical Windows component. If it's missing or corrupted, you should repair Windows rather than replace the file manually.

Recommended: Run System File Checker

sfc /scannow

Open Command Prompt as Administrator and run this command.

Why You Shouldn't Just Download the DLL

  • DLLs depend on other DLLs - copying one file won't fix the chain
  • Runtime packages register components in Windows correctly
  • Version mismatches can cause more problems
  • The official installer handles all of this automatically

Compatibility

Windows Server 2022 Windows Server 2019 Windows Server 2016

File Details

Name
authui.dll
Size
181 KB
Version
10.0.20348
Architecture
x86
Source
Windows system
Part of
Windows System

Hash Verification

47c4edf9552aa232cc1e0231b6e77e420269e4df0e02d4365cecc8169a1e5841
b8f418d97669e8a13d637e59c155392c
ADVANCED

Manual DLL Download

Only if installer doesn't work

This is a last resort. Try the official installer first.
Download ZIP

181 KB | x86

123 downloads

Manual Installation Steps
  1. 1 Extract the ZIP file
  2. 2 Copy to C:/Windows/SysWOW64/
  3. 3 If needed: regsvr32 authui.dll

Official Microsoft source

Malware scanned

SHA-256 verified

Other Versions

authui.dll
x64