Windows Update not working

[Naveen103]

2025-10 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5066835) (26200.6899)

This version of window update facing issue while installing, Kindly solve my issue as soon as possible.

[VikramTheGreat]

Hi @Naveen103,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

Thank you for reaching out with urgency. Your concern is valid, and I understand how frustrating it can be when a critical update like KB5066835 for Windows 11 25H2 (Build 26200.6899) refuses to install, especially when you're relying on your HP notebook for work and productivity.

Step-by-Step Fix for KB5066835 Installation Failure

1. Run the Windows Update Troubleshooter

• Go to Settings > System > Troubleshoot > Other troubleshooters
• Click Windows Update > Run

This tool checks for common issues and attempts automatic fixes.

2. Restart Key Services

• Press Win + R, type services.msc, and press Enter.
• Locate and restart these services: 
  • Windows Update
  • Background Intelligent Transfer Service (BITS)

3. Run System File Checker and DISM

These tools repair corrupted system files that may block updates.

Open Command Prompt as Administrator, then run: sfc /scannow

After that, run: DISM /Online /Cleanup-Image /RestoreHealth

4. Reset Windows Update Components

Follow this guide to reset and update components manually:
🔗 Reset Windows Update in Windows 11

5. Download and Install KB5066835 Manually

If automatic updates fail, try the direct installer:

🔗 Download KB5066835 from Microsoft Update Catalog

Double-click the .msu file to begin installation.

I hope this helps.

Take care and have an amazing day!
 

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Regards,

VikramTheGreat