How to Fix Update KB5051987 Failed to Install in Windows 11 24H2
If you’re trying to install the February security update (KB5051987) for Windows 11 24H2 and it keeps failing, don’t worry. Here’s a complete, step-by-step guide to fix it.
- Install the Update Manually from Microsoft Update Catalog
- Visit the Microsoft Update Catalog (link usually provided in the video description).
- Find the correct file for your system:
- For x64-based systems, download the x64 file.
- For ARM64-based systems, choose the ARM64 version.
- To check your system type:
- Click Start > Settings > System > About.
- Look under System type.
- Download the appropriate update files.
- Open File Explorer, go to your Downloads folder, and right-click each file > Open.
- Follow the on-screen instructions to install manually.
- Ensure Update Services Are Running
Modify key services that manage Windows Updates:
- Open Services (search for “Services” in Start).
- Locate the following services and ensure their Startup Type is Automatic:
- Windows Update
- Background Intelligent Transfer Service (BITS)
- Cryptographic Services
- If the service is stopped, click Start.
- After adjusting, restart each service.
- Reset Windows Update Cache
If services are fine but the update still fails:
- Download the reset tool (link usually in the description).
- Extract the ZIP file.
- Right-click on the reset script and select Run as administrator.
- Follow the prompts to reset the Windows Update cache.
- Restart your computer and try installing the update again.
- Manually Run Windows Update Reset Commands
Alternatively, you can manually reset Windows Update components:
- Open Command Prompt as administrator.
- Run each command provided (normally listed in the video description).
- After executing all commands, restart your computer.
- Repair Corrupted System Files
Corrupted files can prevent updates from installing. To repair:
- Open Command Prompt as administrator.
- Run:
- System File Checker (SFC) command first.
- Then run the DISM commands (CheckHealth, ScanHealth, RestoreHealth).
- Let each command complete fully.
- Restart your computer afterward.
- Uninstall Third-Party Antivirus Software
Third-party antivirus programs can interfere with Windows Update:
- Go to Start > Settings > Installed Apps.
- Find any third-party antivirus software.
- Click on the three dots next to it and select Uninstall.
- Follow the instructions to complete uninstallation.
- Restart your computer and try updating again.
- Free Up Disk Space
You need enough free space to install updates:
- The KB5051987 update is around 1,128.6 MB.
- Check available space in File Explorer > This PC > C: drive.
- If space is low:
- Uninstall less important apps.
- Run Disk Cleanup:
- Search for Disk Cleanup.
- Select C: drive.
- Choose Clean up system files.
- Check all boxes and proceed.
- Perform an In-Place Upgrade
If none of the above solutions work, reinstall Windows 11 without losing your files:
- Open a browser and search Windows 11 download.
- Go to the official Microsoft download page.
- Scroll to Download Windows 11 Disk Image (ISO).
- Select the correct ISO for your system.
- Choose your product language (match your current system language).
- Download the ISO and mount it.
- Run setup.exe from the mounted drive.
- Follow the on-screen instructions to install Windows 11 while keeping your files and apps.
Endnote:
Following these steps should resolve the KB5051987 installation error on Windows 11 24H2. Always ensure system services are properly running, clear update caches, and if necessary, repair system files or reinstall using in-place upgrade methods.
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