Safe
Free

SimAuth.dll

x64 Windows System
Verified

This is a Core Windows System File

SimAuth.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
SimAuth.dll
Size
160 KB
Version
10.0.20348
Architecture
x64
Source
Windows system
Part of
Windows System

Hash Verification

779712409b1c0eb671b497e1816e63233e4328fc6b3e0efd788a2fa0b0145fc5
425dd5ab9c997c587144a7f350012226
ADVANCED

Manual DLL Download

Only if installer doesn't work

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

160 KB | x64

590 downloads

Manual Installation Steps
  1. 1 Extract the ZIP file
  2. 2 Copy to C:/Windows/System32/
  3. 3 If needed: regsvr32 SimAuth.dll

Official Microsoft source

Malware scanned

SHA-256 verified

Other Versions

SimAuth.dll
x86