Safe
Free
DLL Vault

system.security.dll

x86 .NET Framework
Verified
RECOMMENDED FIX

Install .NET Framework

This DLL is part of the Microsoft .NET Framework. Installing the official package is the correct way to fix this error.

Download 64-bit Installer Download 32-bit Installer

Official installer from Microsoft.com

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 10/11 Windows 11 Windows 10 Windows 8.1 Windows 8 Windows 7

File Details

Name
system.security.dll
Size
311.98 KB
Version
10.0.20348
Architecture
x86
Source
Windows system
Part of
.NET Framework

Hash Verification

c709a9081c225785eb05a4e7a306e07b9195755ffd24f7b549c9f8828ac7ea79
f51ae87e3082a965dcade103c8f5fbdf

Best Solution

Install the official package

.NET Framework (64-bit) 32-bit Version
ADVANCED

Manual DLL Download

Only if installer doesn't work

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

311.98 KB | x86

3,870 downloads

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

Official Microsoft source

Malware scanned

SHA-256 verified