Safe
Free
DLL Vault

system.web.extensions.design.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.web.extensions.design.dll
Size
348.78 KB
Version
10.0.20348
Architecture
x86
Source
Windows system
Part of
.NET Framework

Hash Verification

48a8d7410545fa70dcf428e5c9619be28bb45380da400b48a65b7cf0b69dce41
12a0219d1a04c8375eb030d8acd78e54

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

348.78 KB | x86

4,876 downloads

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

Official Microsoft source

Malware scanned

SHA-256 verified