# Run HyperDbg on VMware

If you want to attach to HyperDbg in the [debugger mode](https://docs.hyperdbg.org/using-hyperdbg/prerequisites/operation-modes#debugger-mode) or if you want to attach [two VMs together](https://docs.hyperdbg.org/getting-started/attach-to-hyperdbg/debug#vmware-workstation-two-vms), please follow the steps provided [here](https://docs.hyperdbg.org/getting-started/attach-to-hyperdbg/debug#vmware-workstation).

In order to run HyperDbg on VMware, you should enable nested-virtualization on it.

First of all, make sure to update your VMWare to the latest version (it’s important as VMWare sometimes has problems with nested-virtualization on out-dated versions).

Click on "Edit virtual machine settings" on your target VM.

![](https://1255335821-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M2wWz6ePF27bvsJcWed%2Fuploads%2Fgit-blob-1cdadc6768cbee650f827ea47983b14d2d48fbb8%2Fnested-virtualization-vmware1.png?alt=media)

Now, enable the following options on your machine.

![](https://1255335821-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M2wWz6ePF27bvsJcWed%2Fuploads%2Fgit-blob-1c59bbac820fb3f5f448cef9b288e6c52b67ab0a%2Fnested-virtualization-vmware2.png?alt=media)

Note that you have a limitation on using **!ioin** and **!ioout** in VMware nested-virtualization. ([VMware backdoor I/O port](https://docs.hyperdbg.org/tips-and-tricks/nested-virtualization-environments/vmware-backdoor-io-ports)).

{% hint style="warning" %}
**HyperDbg** will not hide traces from VMware or any other nested-virtualization environments. Malware or any application can detect the presence of VMWare, and regular anti-vm techniques detect the VMware environment.
{% endhint %}