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How to Detect Unauthorized Software Installed on Windows

Issue Description 

Unauthorized software may indicate malware, remote access tools, or system compromise. 

Common Causes 

  • Bundle installers 
  • Remote access scams 
  • Adware infections 

Step-by-Step Solution 

Step 1: Review Installed Programs 

  • Open Settings → Apps → Installed apps 
  • Sort by Installed date 

 

Step 2: Check Startup Entries 

  • Open Task Manager → Startup 
  • Disable unknown programs 

 

Step 3: Review Running Processes 

  • Use Task Manager → Processes 
  • End suspicious processes 

 

Step 4: Scan System 

  • Run Microsoft Defender Full Scan 

Explore Further 

  • Review Event Viewer install logs 

Prevention & Best Practices 

Install software only from official sources.