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How to Repair Corrupt or Missing DLL Files in Windows

Issue Description 

DLL (Dynamic Link Library) errors can prevent applications or Windows features from working correctly. 

Common Causes 

  • Incomplete software installations 
  • Malware infections 
  • System file corruption 
  • Manual deletion of DLL files 

Step-by-Step Solution 

Step 1: Restart the PC 

  • Restart Windows once to rule out temporary memory issues 

 

Step 2: Run System File Checker 

  • Open Command Prompt (Admin) 
  • Run: 

sfc /scannow 

  • Wait for completion 
  • Restart if errors are repaired 

 

Step 3: Run DISM Repair 

  • In Command Prompt (Admin), run: 

DISM /Online /Cleanup-Image /RestoreHealth 

  • Restart the PC 

 

Step 4: Reinstall the Affected Program 

  • Open Settings → Apps → Installed apps 
  • Uninstall the program showing DLL errors 
  • Download and reinstall it from the official source 

 

Step 5: Scan for Malware 

  • Open Windows Security → Virus & threat protection 
  • Run a Full scan 

️ Avoid downloading DLL files from random websites 

Explore Further 

  • Check Event Viewer for DLL error details 

Prevention & Best Practices 

Keep Windows updated and avoid third-party DLL downloads.