As one of the many system processes on your Windows PC, the Windows Modules Installer Worker plays a critical part in how Windows operates. You may not know it yet, but this process helps to ensure that the Windows Update service works correctly. Just like ntoskrnl.exe and others, you can’t stop or disable it.

That doesn’t mean that you shouldn’t take an interest in what exactly the Windows Modules Installer Worker process does and whether it’s safe, especially if you see it with high CPU usage in Task Manager. To help you, here’s what you need to know about this important process, including how to troubleshoot it if problems appear.