What Is Vmmem (WSL and Hyper-V)? Is It Safe to Disable at Startup?
Vmmem is a Microsoft process that shows CPU and memory used by WSL or Hyper-V virtual machines. It is safe and should not be disabled.
- Verdict
- Keep runningVmmem is a legitimate Microsoft virtualization process used by WSL and Hyper-V, not a normal startup app you should disable.
- File name
- vmmem
- Publisher
- Microsoft Corporation
- Platforms
- Windows
- Reviewed
What Is Vmmem (WSL and Hyper-V)?
Vmmem is a Windows process name used to show the resource usage of virtual machines managed by Microsoft virtualization features, mainly WSL 2 and Hyper-V. It is not a normal app in your Startup folder or Run keys. Instead, it appears when Windows is running a Linux environment in WSL 2, a Hyper-V virtual machine, or related virtualization components.
In plain terms, Vmmem is the container Windows uses to report how much CPU and memory those virtualized workloads are using.
Is It Safe?
Yes — Vmmem is normally safe when it is tied to Microsoft virtualization features. On a typical system it is part of Windows, not malware.
That said, malware can use misleading names. If you are unsure, check the process details in Task Manager or Process Explorer and confirm it is associated with Microsoft Corporation. Also check whether you actually use WSL, Docker Desktop with WSL 2, Hyper-V, or another tool that relies on them. If you do, seeing Vmmem is expected.
Do not try to remove Vmmem itself. It is not a standalone program you uninstall.
Should I Disable It at Startup?
No. Vmmem is not a normal startup item, and there is usually nothing to disable in Kudu's Startup Manager for it.
If you use WSL, Docker Desktop, Android emulators, or Hyper-V virtual machines, Vmmem may start when those tools start or when a VM is active. Disabling the actual virtualization features just to hide Vmmem is usually the wrong fix.
Only turn off the related software or Windows features if you know you do not use them. For example, if Docker Desktop is set to launch with Windows, disabling Docker's startup entry can stop Vmmem from appearing until you open Docker again.
Why Is It Using High CPU or Memory?
High usage usually means the guest workload is busy, not that Vmmem itself is broken. Common causes include:
- a Linux process in WSL 2 using lots of CPU or RAM
- Docker containers building images or running services
- a Hyper-V virtual machine under load
- memory being held by WSL after heavy work
To troubleshoot, check what is running inside WSL or the VM. If Docker is involved, inspect active containers. If usage stays high after work is finished, shutting down the related VM or WSL session can help. For WSL, users often stop active distributions or restart WSL rather than trying to kill Vmmem directly.
How to Disable or Remove It
You generally do not disable Vmmem itself.
Instead, disable or remove the thing that starts the virtual environment:
- disable Docker Desktop or similar tools from startup if you do not want them launching with Windows
- close or shut down Hyper-V virtual machines you are not using
- stop WSL sessions when finished
- if you never use these features, you can turn off the related Windows virtualization features, but only if you are sure nothing depends on them
Avoid ending random system processes to fix this. If you rely on WSL or Hyper-V, doing so can interrupt running workloads.
Where Kudu Helps
Kudu can help you find which startup app is launching the virtualization stack. Use Startup Manager to look for entries such as Docker or other VM tools and disable them if you do not want them opening with Windows.
If Vmmem is using a lot of resources, Performance Monitor can show the CPU and memory impact in real time so you can confirm whether the load is ongoing before you close the related app or VM.
Kudu will not list Vmmem as a normal startup item because it is usually a system-managed virtualization process, not a standard Run key or Startup folder entry.
Frequently asked questions
- Can I end Vmmem in Task Manager?
- You usually should not. Ending it can abruptly stop WSL, Docker, or Hyper-V workloads and may cause data loss inside the virtual environment.
- Why does Vmmem appear when I open Docker Desktop?
- Docker Desktop often uses WSL 2 or Hyper-V on Windows. Vmmem then reflects the CPU and memory used by Docker's virtualized backend.
- Is Vmmem a virus?
- Normally no. It is a legitimate Microsoft process name used for virtualization workloads, but if the details do not point to Microsoft or the behavior makes no sense for your setup, investigate further.
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