How to fix KB5014666 fails to install on Windows 10?

Hello dear! I am dealing with a problem on my Windows 10 computer where I can’t process to the Windows Update to the latest KB5014666 release. Kindly, help me what to do to resolve the problem.

Recently, people have encountered problems when installing KB5014666 on Windows 10. The possible reasons why KB5014666 fails to install could be any form corrupted system files, malfunctioning Windows services, update components and etc.

In this guide, we have provided seven different fixes that you should apply one by one. These will definitely help you in getting rid of the issue. If you don’t want to involve in manual troubleshooting, you can use PC Repair Tool – an automatic tool to scan your system to get fixes for PC related issues.

Manual fixes for KB5014666 fails to install

Fix 1: Run Windows Update Troubleshooter

  • Press Win+ X and go to the Settings,
  • Click on Update and Security,
  • Navigate to Troubleshooter> Additional Troubleshooters> Update Troubleshooter,
  • Restart the device once the process is complete and try updating now and now you are able to perform Windows update.

Fix 2: Remove DataStore Files

  • On the Start menu, type services.msc,
  • Click on the top research,
  • Search now for Windows Update,
  • Right-click on it and then click Stop,
  • Next, press Win+ R, type %windir%\SoftwareDistribution\DataStore and click OK,
  • Delete all contents in the folder,
  • Now, open services, locate Windows Update service again,
  • Right-click on it and choose Start.

Fix 3: Restart Windows Services

  • Press Win+ R, type in services.msc and hit Enter,
  • Double-click on Background Intelligent Transfer Service,
  • If Startup status lists Stopped, click on Start button and then click OK,
  • If the status is Running, right-click on it and select Restart,
  • Find Windows Update service, double-click on it,
  • Check its startup status; if it is Stopped, click on Start button and then press OK and if it is Running, right-click on it and select Restart.

Fix 4: Delete Files in SoftwareDistribution Folder

  • Press Win+ R, type services.msc and hit Enter,
  • In the Services Control Panel, find Windows Update Service,
  • Right-click on Windows Update and select Stop,
  • Now, open Windows Explorer and navigate to C:\Windows folder,
  • Locate SoftwareDistribution folder and Delete its contents.

Fix 5: Reset Windows Update Components

  • Search for CMD on the Windows Search,
  • Right-click on Command Prompt and select Run as Administrator,
  • Copy and paste the following commands and hit Enter on each time:

net stop bits
net stop wuauserv
net stop appidsvc
net stop cryptsvc
Del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*.*”
rmdir %systemroot%\SoftwareDistribution /S /Q
rmdir %systemroot%\system32\catroot2 /S /Q
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
netsh winsock reset
netsh winsock reset proxy
net start bits
net start wuauserv
net start appidsvc
net start cryptsvc

  • Restart your PC and try updating your Windows again and see if the problem KB5014666 fails to install remains.

Fix 6: Install the Update manually

You can try updating Windows manually. Firstly, check which KB number is relevant to you:

  • Right-click on Start button and select Settings,
  • Go to Update & Security,
  • Locate View update history and click on it,
  • Note the KB number that fails to install from the provided list,
  • Go to the Microsoft Update Catalog page now ad type in the KB number and then click on Search option,
  • Download the update and install it manually.

Fix 7: Update via Media Creation Tool

  • Download Windows 10 installation media from its official page,
  • Once installed, open it and agree its license terms,
  • Click on Upgrade this PC now option.
Conclusion

That’s all! We have provided all possible fixes for KB5014666 fails to install. Hope so, these methods are helpful for you in getting the required fix. Comment down below to review the post how fruitful it is for you and what needed suggestion you want to give us for improvement.