What is mpsigstub.exe?
mpsigstub.exe is a Microsoft executable related to updating Microsoft's Windows Security app in Windows 10 or 11. In Windows the .exe is referred to as the Microsoft Malware Protection Signature Update Stub. The official .exe is safe and exists to download and update Windows Security (formerly Windows Defender). What's a stub installer? Stubs are usually partial installers that are used to download the full software and save bandwidth. For example Google's Chrome has a stub installer that you install with Windows that when executed then downloads and installs the full version of Chrome. This way Google can make a very tiny installer for Chrome to get more downloads and installs of their popular browser.
Publisher: Microsoft Corporation
What does mpsigstub.exe do?
mpsigstub.exe updates Windows Security with a stub downloader and updater.
Is mpsigstub.exe safe? 5 easy ways to see if mpsigstub.exe is safe or malware.
- 1. See who signed the mpsigstub.exe (check the publisher)
- 2. Scan mpsigstub.exe with Windows Security.
- 3. Check the network activity of mpsigstub.exe.
- 4. Analyze mpsigstub.exe with VirusTotal.
- 5. Run it in Windows Sandbox.
Get access to the same network security tool that Information Security Professionals use to
detect suspicious .exe apps, bandwidth wasters, and privacy violators.
Trust by over 20 million people.
Get GlassWire now for FREE!
Why does mpsigstub.exe access the network?
mpsigstub.exe accesses the network to install updates for Windows Security using stub technology. We blocked mpsigstub.exe with GlassWire network security and we found it caused no alerts or issues with Windows Security. However, we recommend that this executable remain unblocked since it helps with the security of your PC. When investigating the app we found it connected to a Microsoft cloud server, as we'd expect it would. The server was skypedataprdcolwus15.cloudapp.net in our case and in our geographic location in Austin, Texas USA.
Our goal at GlassWire is to help people protect their privacy and security.
We have helped over 20 million people protect their devices from threats.
Are you curious about the safety of another Windows file?
Visit our full Windows .exe file directory.
Have suggestions on how we can improve this page? Please let us know.
Join our Internet security newsletter!
Learn how to protect and monitor your network with GlassWire.