How To Run The Microsoft Security Essentials Command-Line

Start –> run –> type cmd –> hit enter.

Paste the following: "%ProgramFiles%\Microsoft Security Essentials\MpCmdRun.exe"

Hit enter.

List of Commands

• 
  -? / -h     Displays all available options for this tool.
• 
  -Trace [-Grouping #] [-Level #]     Starts diagnostic tracing
• 
  -RemoveDefinitions [-All]     Restores the installed signature definitions to a previous backup copy or to the original default set of signatures
• 
  -RestoreDefaults     Resets the registry values for Microsoft Antimalware Service settings to known good defaults
• 
  -SignatureUpdate [-UNC]     Checks for new definition updates
  -Scan [-ScanType]     Scans for malicious software
• 
  -Restore -Name <name> [-All]     Restore the most recently or all quarantined item(s) based on name
• 
  -GetFiles     Collects support information