Safe
Free

CoreMas.dll

x64 Windows System
Verified

This is a Core Windows System File

CoreMas.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
CoreMas.dll
Size
288 KB
Version
10.0.20348
Architecture
x64
Source
Windows system
Part of
Windows System

Hash Verification

6038db247c9bf58c526a6c25db445d4350de9b88746d7569381d1ffc651ade9b
12463db1b93606277812047ea540b16c
ADVANCED

Manual DLL Download

Only if installer doesn't work

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

288 KB | x64

3,147 downloads

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

Official Microsoft source

Malware scanned

SHA-256 verified

Other Versions

CoreMas.dll
x86