Log in to the Management Console.

From the top menu bar, select your organization if organizations are enabled.

Click Protect > Proxmox.
The All Nodes page appears that lists all the registered nodes/clusters.

Select the registered nodes/clusters from the Node list in the left navigation pane.

In the navigation pane, click Configured VMs.

Click on the virtual machine you want to delete.
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Click the more options button and click Delete.
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A confirmation dialog is displayed. Provide a reason in the Reason for deletion box and click Delete. The reason is required to confirm your action and to prevent any accidental deletion. This is a mandatory field, and you can use a minimum of 10 characters and a maximum of 150 characters to provide the reason for deletion. Note that all deletion requests with a reason will be reported to the Audit Trails.
For more information, see View Admin Audit Trails page.