How Can You Quickly Fix the Frustrating Windows Defender Update Error 80247140?

What Are the Most Effective Ways to Solve the Persistent Windows Defender Update Failed Error 80247140?

The Windows Defender update error 80247140 often occurs due to glitches in recent updates, corrupted update cache, or damaged update components. This guide provides clear, step-by-step solutions to fix this issue and ensure your Windows Defender updates smoothly.

Causes of Windows Defender Update Error 80247140

• Glitches in recent Windows Defender updates
• Corrupted Windows Update cache
• Damaged or corrupted Windows Update components

Step-by-Step Solutions to Fix Error 80247140

Solution 1: Run Windows Update Troubleshooter

1. Press Win + I, go to System > Troubleshoot > Other troubleshooters.
2. Find Windows Update, click Run.
3. Follow prompts to fix detected issues and restart your PC.

Solution 2: Manually Install the Defender Update

1. Visit the Microsoft Update Catalog website.
2. Search for the specific update (e.g., KB4052623).
3. Download and install it manually by following on-screen instructions.

Solution 3: Clear Windows Update Cache

1. Open Command Prompt as Administrator (Win + R, type cmd, press Ctrl + Shift + Enter).
2. Run these commands one by one:

   net stop wuauserv
   cd %Windir%\SoftwareDistribution
   del /f /s /q Download

3. Restart your computer.

Solution 4: Update Defender via PowerShell

1. Open Windows PowerShell as Administrator.
2. Execute:

   & "${env:ProgramFiles}\Windows Defender\MpCmdRun.exe" -SignatureUpdate -MMPC

Solution 5: Create a Desktop Shortcut for Manual Update

1. Right-click desktop, select New > Shortcut.
2. Browse to:
   C:\Program Files\Windows Defender\MpCmdRun.exe
3. Add arguments: -signatureupdate -MMPC
4. Name the shortcut and finish.
5. Double-click it to update Defender.

Solution 6: Reset Windows Update Components

Resetting replaces corrupted update components with fresh ones. This can be done via command-line scripts or manually stopping services, deleting cache folders, and restarting services (detailed instructions available in official Microsoft support).

Following these targeted methods will help resolve the Windows Defender update error 80247140, restoring your system’s security updates without hassle.