Microsoft Security Essentials and Windows Defender Usage

Updating, Scanning, and Virus Removal

Updating

Because new viruses and malware are released daily, Microsoft regularly releases new virus definitions for Microsoft Security Essentials (MSE) and Windows Defender (Defender).

MSE and Defender will update automatically. To update manually, use the following procedure:

  1. Open MSE or Defender by double clicking the MSE icon (microsoft security essentials notification icon) or the Defender icon (a castle).
  2. Click the Update tab.
    MSE application displaying update tab
  3. Click Update.
    MSE application window displaying the update process

Scanning

    1. Open MSE or Defender by double clicking the MSE icon (microsoft security essentials notification icon) or the Defender icon (a castle).
  1. Click the Home tab.
    MSE application displaying Home tab
  2. On the right, select a Scan Option (quick, full, or custom scan) and click Scan now.
  3. The scan will start.
    MSE application displaying scan process

    An icon in your notification area will swirl while the scan is in progress.

    MSE scanning notification icon

  4. If nothing is found, you will return back to the home page panel interface. If malware is found, see the Virus Removal section of this documentation

Virus Removal

  1. If a virus or harmful software has been detected, the icon in your notification area will turn red and have an X through it.

    MSE risk notification icon

  2. Open MSE or Defender by double clicking the icon in your notification area.  Red indicates your computer is at risk.
    MSE application displaying home tab after a threat is detected
  3. Click Clean Computer to start.

    MSE application displaying home tab during file scan

  4. Once complete, a list of Detected items will be displayed. Click Apply Actions to remove the potential threats on your computer.

    MSE application displaying list of detected items

  5. After the items have been successfully removed, click Close.
Custom Fields
  • Department: Enterprise Collaboration & Messaging
Attached Files
There are no attachments for this article.
Related Articles RSS Feed
Why Can’t I Forward Emails to Phishing.Report@unh.edu?
Viewed 301 times since Thu, Feb 22, 2018
Using Facebook, Google or other Social Login Services
Viewed 952 times since Fri, Aug 26, 2016
Tax Related Identity Theft
Viewed 913 times since Wed, Feb 17, 2016
Network Registration & Vulnerability Scans
Viewed 1273 times since Wed, Apr 29, 2015
Good Security Practices to Adopt at Work/School, and at Home
Viewed 671 times since Fri, Jul 14, 2017
Storing Restricted and Sensitive Data in Box @ UNH
Viewed 1457 times since Thu, May 28, 2015
Mobile Device Health and Security
Viewed 1259 times since Fri, Jul 10, 2015
Microsoft Security Essentials and Windows Defender Installation
Viewed 23600 times since Wed, Aug 12, 2015
File-Sharing Policy
Viewed 861 times since Tue, Jun 2, 2015
How to Determine if Your Windows Device is Automatically Updating
Viewed 515 times since Thu, Nov 2, 2017
MENU