Safe
Free

cdosys.dll

x64 Windows System
Verified

This is a Core Windows System File

cdosys.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
cdosys.dll
Size
1.09 MB
Version
10.0.20348
Architecture
x64
Source
Windows system
Part of
Windows System

Hash Verification

2dea442a7ac7d58c9d9d7e18fd57cda1ed9b45609e3bafe9344487d9fc7da468
5dca19c47cd322f1834c17fd3f9cc496
ADVANCED

Manual DLL Download

Only if installer doesn't work

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

1.09 MB | x64

4,615 downloads

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

Official Microsoft source

Malware scanned

SHA-256 verified

Other Versions

cdosys.dll
x86