WordPress updates are essential for security, performance, and functionality, but they can also introduce conflicts or break existing features, and a failed update on a live site means lost revenue and downtime. The risk is largely preventable: the key is not avoiding updates but preparing for them. This guide covers the steps to take before updating WordPress, from backups and compatibility checks to staging, security, and rollback planning, for simple sites and for complex WordPress and WooCommerce setups with integrations.
In short: take a fresh backup you have tested, check compatibility, test the update on a staging copy that mirrors production, update in steps in a quiet window, and keep a rollback plan with clear criteria. For e-commerce sites, plan for the data that arrives between the backup and any rollback.
Why WordPress pre-update preparation matters
WordPress releases arrive regularly with security patches, bug fixes, and new features. Each update can disrupt functionality, especially with custom themes, plugins, or complex configurations. Common problems include plugin conflicts, theme incompatibilities, database errors, and broken custom functionality, particularly on multilingual sites, WooCommerce stores, and custom applications integrated with ERP and CRM systems.
The cost of poor preparation goes beyond technical issues: broken sites mean lost revenue, a damaged user experience, and potentially weaker search visibility. Preparation turns updates from a risk into a routine. For the update cadence, see how often you should update a WordPress site.
Minor core releases, which are mostly security fixes, are installed automatically by default, and you can control that behaviour. Major releases and plugin and theme updates need your attention. See whether WordPress themes update automatically.
What are the essential backup strategies before updating WordPress?
A complete backup is the foundation of any update strategy. You need the database and the files, including uploads, themes, plugins, and configuration, so you can restore the whole site.
- Take a fresh backup right before the update, not only a scheduled one from last night
- Back up files and database, and keep them separately so you can restore either
- Store copies off the server, in cloud storage or another location, so a server problem does not take the backups with it
- Verify the backup: check that it is complete, and test a restore on staging, because an untested backup is an assumption
- Keep several restore points so you can go back further if a problem surfaces later
A restore returns the site to the backup point, so anything added since then, such as orders, comments, or form entries, is lost. On an e-commerce site, update in a quiet window and decide in advance how you will handle data that arrives between the backup and a rollback.
How do you assess plugin, theme, and PHP compatibility?
Compatibility assessment needs a systematic approach. Read the release notes of the WordPress version you plan to install, and check each plugin’s changelog and its “Tested up to” and “Requires PHP” information in the plugin directory. These fields are a hint, not a guarantee, so always test. Plugins that have not been updated for a long time or show warnings need special attention.
For custom plugins and themes, review the code for deprecated functions and outdated APIs that could break on the new version. Check that your hosting runs a supported PHP version, because a WordPress, plugin, or theme update can require a newer PHP.
Create a compatibility list of all plugins, themes, and custom components with their status. It shows potential conflicts before they happen and helps plan updates or replacements, for example for abandoned plugins. If you have many unused themes, clean them up first. See whether to delete unused WordPress themes.
What security measures should you take before an update?
Security preparation protects the site during the update:
- Audit user permissions and make sure only necessary people have administrator access during the update window
- Run a malware scan before updating, because existing problems can get worse during an update
- Check that your firewall and monitoring are active so unusual activity is noticed during and after the update
- Consider restricting admin access to known IP addresses during the update
- Check that your security plugins are compatible with the new WordPress version
See our WordPress security approach.
How do you create and test a staging environment?
A staging environment is where you find and fix problems before they reach your live site. It should mirror production as closely as possible, including the server configuration, PHP version, and database. Clone the whole production site, with files, database, and configuration. Many hosts offer one-click staging, and you can also create it manually or with specialised plugins.
Testing procedures when updating WordPress
Update on staging, in the order you will use on production, and test thoroughly:
- Turn on debug logging and check the logs for errors and deprecation notices
- Test forms, user registration, logins, search, and key pages
- On e-commerce sites, test the whole checkout, payments, emails, and order statuses. See why orders fail on WooCommerce.
- Test custom integrations with third-party systems
- Check performance after the update, because new versions can affect loading time or resource use
- Check different devices and browsers for responsive or browser-specific issues
In what order and when should you update?
Do not update everything at once. Update in steps and test between them, usually core first, then plugins, then themes, so you know which update caused any problem. Choose a quiet time window, and for content-heavy sites agree a short content freeze. After the update, clear caches, check the site, and watch error logs and key metrics for the first hours and days.
For WooCommerce, check whether the update asks for a database update and run it as instructed, and confirm that payment and checkout extensions are compatible.
What documentation and rollback plans are needed?
Documentation is your roadmap during updates. Record the current versions of WordPress, plugins, and themes, and any custom configuration or modification. Document your staging test procedures and results, because they help you anticipate problems and give context if something goes wrong on the live site.
Rollback procedures
Define rollback procedures before you start. Write down the exact steps to restore the site from backups, including database restoration, file replacement, and configuration reset. Set a timeline with decision points that say when to abort and restore, so you can decide quickly under pressure, and prepare communication templates for the team, clients, or users about schedules, downtime, or problems.
At WLC, our Growth & Care service covers tested updates, monitoring, and rollback, so your site stays up during critical updates. For a technical review of your current setup, start with an audit.
Key takeaways for updating WordPress
Successful update preparation combines technical practice with systematic planning: backups you have tested, compatibility assessment, security measures, staging tests, and a rollback plan. Together they minimise risk and let you benefit from updates quickly. This approach turns maintenance from a stressful, unpredictable task into a controlled routine, for simple sites and for complex custom applications alike. Talk to us about WordPress development and maintenance.
Frequently asked questions about updating WordPress
What should I do before updating WordPress?
Take a fresh full backup and check that it can be restored, test the update on a staging copy, check plugin, theme, and PHP compatibility, review security and user access, plan a quiet time window, and prepare a rollback plan with clear criteria.
Should I update WordPress core, plugins, and themes all at once?
No. Update in steps and test between them, usually core first, then plugins, then themes, so that if something breaks you know which update caused it. Minor security releases of core are applied automatically by default, while major releases deserve a staging test.
How do I test a WordPress update safely?
On a staging copy that mirrors production, including the PHP version, server settings, and database. Turn on debug logging, update, and then test forms, checkout, logins, integrations, and key pages on several devices and browsers.
What if a backup restore removes new orders or content?
A restore returns the site to the backup point, so anything added since then is lost. Take the backup right before the update, update in a quiet window, and consider pausing orders or exporting new data before a rollback on an e-commerce site.
How long does a WordPress update take?
The core update itself usually takes minutes. Preparation, staging tests, and checks take longer, from an hour for a simple site to a day or more for a complex or e-commerce site.
How often should I update WordPress?
Apply security updates promptly and check for other updates weekly, with a regular, tested routine. Delaying updates leaves known vulnerabilities open, while unplanned updates risk breakage.
