---
title: "esx.problem.storage.apd.start"
description: "All paths are down. Storage has become inaccessible for unknown reasons. Storage device has entered the all paths down (APD) state. For more information on the problem and resolution steps, see this VMware KB article."
canonical: "https://helpcenter.veeam.com/docs/mp/kb/esx.problem.storage.apd.start.html"
breadcrumb: "Veeam MP for VMware Online Knowledge Base > Event-Based Rules > vSphere Host Storage Warning > esx.problem.storage.apd.start"
dateModified: "2026-09-10"
---

# esx.problem.storage.apd.start

## Summary

All paths are down. Storage has become inaccessible for unknown reasons.

## Causes

Storage device has entered the all paths down (APD) state.

## Resolutions

For more information on the problem and resolution steps, see this [VMware KB article](https://kb.vmware.com/s/article/2032934).

## External

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