# API05005: Plugin Not Found

## What This Means[​](#what-this-means "Direct link to What This Means")

A required WordPress plugin is not installed or active. This could be WooCommerce itself, a required extension, or an integration plugin.

## Common Causes[​](#common-causes "Direct link to Common Causes")

* **WooCommerce deactivated** — WooCommerce was disabled
* **Required extension missing** — A needed WooCommerce extension isn't installed
* **Plugin conflict** — Another plugin caused a required plugin to deactivate
* **Failed update** — A plugin update failed and left it deactivated

## How to Fix[​](#how-to-fix "Direct link to How to Fix")

### 1. Verify WooCommerce is Active[​](#1-verify-woocommerce-is-active "Direct link to 1. Verify WooCommerce is Active")

WCPOS requires WooCommerce:

1. Go to Plugins → Installed Plugins
2. Find "WooCommerce"
3. Ensure it's activated

### 2. Check for Required Extensions[​](#2-check-for-required-extensions "Direct link to 2. Check for Required Extensions")

Some WCPOS features may require extensions:

* Check error message for specific plugin name
* Install and activate the required extension

### 3. Review Plugin Conflicts[​](#3-review-plugin-conflicts "Direct link to 3. Review Plugin Conflicts")

If plugins were deactivated due to conflicts:

1. Check your email for WordPress notifications
2. Review error logs
3. Resolve conflicts and reactivate

### 4. Check Plugin Files[​](#4-check-plugin-files "Direct link to 4. Check Plugin Files")

If a plugin's files are missing:

1. Reinstall the plugin from WordPress.org
2. Or restore from backup
3. Activate the plugin

### 5. Update All Plugins[​](#5-update-all-plugins "Direct link to 5. Update All Plugins")

Outdated plugins may cause issues:

1. Go to Dashboard → Updates
2. Update all plugins
3. Verify all required plugins are active

## Required Plugins[​](#required-plugins "Direct link to Required Plugins")

At minimum, WCPOS requires:

* **WooCommerce** — The e-commerce platform
* **WCPOS** — The POS plugin

Additional features may require other plugins.

## Related Errors[​](#related-errors "Direct link to Related Errors")

* [API05002](/error-codes/API05002.md) — WCPOS Plugin Not Found
* [API05001](/error-codes/API05001.md) — WooCommerce API Disabled