How to Fix Hyper-V CPU Usage Showing 0% in Windows Server 2025 and Windows 11 24H2
If you’re running Hyper-V on Windows Server 2025 and noticing that the CPU usage for your virtual machines (VMs) is perpetually showing 0% in Hyper-V Manager and Performance Monitor, you’re not alone. This bug has been reported by multiple users and appears to stem from changes introduced in Windows 11 24H2 and Windows Server 2025. Fortunately, there’s a straightforward fix involving a manual update installation. In this post, I’ll walk you through the issue and how to resolve it.
The Solution: KB5062660 Preview Update
Microsoft addressed this issue in the KB5062660 preview update released on July 22, 2025. This update, which brings the OS build number to 26100.4770, specifically resolves the CPU monitoring issue in Hyper-V environment
Step-by-Step Guide to Installing KB5062660
Since KB5062660 is currently a preview update, it is not yet available through standard Windows Update channels. You’ll need to manually download and install it from the Microsoft Update Catalog. Here’s how:
Prerequisites
- Back up your system: Before installing any update, especially a preview release, ensure you have a complete backup of your system and important VMs.
- Verify your OS version: This update applies only to Windows 11 version 24H2 and Windows Server 2025 (all editions
Installation Steps
- Visit the Microsoft Update Catalog
Open your web browser and navigate to the Microsoft Update Catalog. - Search for KB5062660
Use the search box at the top-right of the page to search for “KB5062660”. - Download the correct version
Find the update that matches your system architecture (x64 or ARM64) and click the “Download” button. - Install the update
Once downloaded, double-click the .msu file to begin installation. Follow the on-screen prompts to complete the process. - Restart your system
After installation completes, restart your computer to finalize the update.
Table: Update Overview
| Update Information | Details |
|---|---|
| Knowledge Base | KB5062660 |
| OS Build | 26100.4770 |
| Release Date | July 22, 2025 |
| Applicable OS | Windows 11 version 24H2, all editions Windows Server 2025, all editions |
| Update Type | Preview update |