safe file


Signature Download Utility

Recommended download to fix your PC

MpSigDwn.dll. What is it?

The MpSigDwn.dll is a Signature Download Utility.

This file is part of Windows Defender. MpSigDwn.dll is developed by Microsoft Corporation. It’s a system and hidden file. MpSigDwn.dll is usually located in the %PROGRAM_FILES% sub-folder and its usual size is 134,200 bytes.


The MpSigDwn.dll process is safe and disabling it can be dangerous, because programs on your computer need it to work correctly.

We also recommend optimizing your computer.

Computer Speed Up

Select your operating system

General Information

Security risk: Free spyware & virus scanRegistry Errors: Free scan (run Registry Cleaner)Uninstallation: N/A Uninstall (run Unistall Manager)Disk & Memory Usage: N/A Free scan (run Task Manager)


Author: Microsoft CorporationProcess: Signature Download UtilityPart Of: Windows DefenderCommon path(s): subfolder in %PROGRAM_FILES%
subfolder in %WINDOWS%
Keywords(s): systemFilesize(s): 134,200 bytes

User opinions

Add your comment

No comments found

Add your comment
Your name:
Your rating:
unrated file
Characters Type the characters you see in the picture:
Show another picture

Scan Your Computer Now