A driver cannot load on this device - Windows Server 2025

In this post, I describe how I resolved the warning: "A driver cannot load on this device" This warning was raised by the Program Compatibility Assistant on Windows Server 2025 when I attempted to run the program Process Explorer. Cause This warning is caused by device protection in Windows Security which helps to prevent drivers from being used to run malware. Resolution Because this warning occurred on a virtual machine used only for testing, I was happy to resolve this issue by disabling the device protection security. To do this on Windows Server 2025: 1. Open Windows Security : 2. Go to Device Security : 3. Turn off Microsoft Vulnerable Driver Blocklist : 4. Restart the computer for the settings to take effect. I was then able to run Process Explorer without getting the warning.