---
title: "esx.problem.net.proxyswitch.port.unavailable"
description: "Virtual NIC connection to switch failed. There are no more ports available on the host proxy switch. If a VM cannot get a valid dvPort to connect to, the vNetwork Distributed Switch (vDS) proxy switch port becomes unavailable."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/esx.problem.net.proxyswitch.port.unavailable.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Host Network Warning > esx.problem.net.proxyswitch.port.unavailable"
dateModified: "2026-09-10"
---

# esx.problem.net.proxyswitch.port.unavailable

## Summary

Virtual NIC connection to switch failed. There are no more ports available on the host proxy switch.

If a VM cannot get a valid dvPort to connect to, the vNetwork Distributed Switch (vDS) proxy switch port becomes unavailable.

## Causes

This may occur as part of VM power on, or if the user attempts to connect a VM vNIC to a dvPortgroup or a dvPort.

The message will contain the vNIC MAC address, the UID of the vDS, and the port number.

## Resolutions

Migrate the virtual machine to a different host. If this is a vendor-specific vDS, consult the vendor documentation for this issue.

## External

Refer to the [VMware Online Documentation](https://techdocs.broadcom.com/) for more information on vCenter event messages and possible solutions.