How to Fix the KB5058387 Update Error: Effective Steps for a Smooth Windows 10 Experience

Why Does KB5058387 Fail to Install? Proven Solutions for a Frustrating Windows 10 Update

The KB5058387 update, released on May 13, 2025, targets Windows 10 OS Build 10240.21014. While this update addresses security and performance issues, some users experience installation failures. Here’s a clear, actionable guide to help resolve these problems and ensure your system stays secure.

How to Download KB5058387

Via Windows Update

1. Press Win + I to open Settings.
2. Navigate to Update & Security > Windows Update.
3. If KB5058387 appears, select Download and Install.
4. If not, click Check for updates to search manually.

Via Microsoft Update Catalog

1. Visit the Microsoft Update Catalog website.
2. Search for KB5058387.
3. Identify the correct version for your system type (32-bit or 64-bit).
4. Click Download, then select the link in the pop-up to start the download.
5. Run the downloaded file and follow on-screen instructions.

Troubleshooting KB5058387 Installation Failures

Solution 1: Run Windows Update Troubleshooter

1. Right-click the Start button and select Settings.
2. Go to Update & Security > Troubleshoot.
3. Click Additional troubleshooters.
4. Under Get up and running, select Windows Update > Run the troubleshooter.
5. Follow the prompts to resolve detected issues.

Solution 2: Repair System Files with SFC

1. Right-click the Start button and choose Windows PowerShell (Admin).
2. Approve the User Account Control prompt.
3. Enter:

   sfc /scannow

4. Wait for the scan to finish and restart your PC.

Solution 3: Reset Windows Update Components

1. Open Command Prompt as administrator.
2. Enter these commands one by one, pressing Enter after each:

   net stop bits
   net stop wuauserv
   net stop appidsvc
   net stop cryptsvc
   Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
   Ren C:\Windows\System32\catroot2 Catroot2.old
   net start bits
   net start wuauserv
   net start appidsvc
   net start cryptsvc

3. Restart your computer and try installing the update again.

Solution 4: Perform a Clean Boot

1. Press Win + R, type msconfig, and press Enter.
2. Under the Services tab, check Hide all Microsoft services, then click Disable all.
3. Go to the Startup tab, open Task Manager, and disable unnecessary startup programs.
4. Restart your PC and attempt the update.

Solution 5: Temporarily Disable Antivirus Software

1. Turn off any third-party antivirus or Windows Defender temporarily, as security software can sometimes block updates.
2. Re-enable your antivirus after the update process completes.

Addressing KB5058387 installation failures involves systematic troubleshooting, from running built-in utilities to resetting update components and checking for software conflicts. Following these steps can restore smooth update functionality, protecting your Windows 10 system and improving performance.