# Manage plugins, themes & WordPress core

## Steps

1. Go to **Websites → [site] → CMS**.
2. **Plugins & themes** — activate, deactivate, or deactivate-all (handy when troubleshooting).
3. **Core updates** — update WordPress core to the latest version.
4. Test the site afterwards; if something breaks, deactivate the last plugin you changed or restore a backup.

## Tips

- Update on **staging** first for major changes (see *Use a staging site*).
- Keep plugins and core up to date for security.

## Troubleshooting

- **White screen / error after update** — deactivate all plugins, then re-activate one by one to find the culprit; or restore a backup.
- **Change not visible** — purge the cache.

**Related:** Use a staging site · Back up and restore your website · Configure caching