How to de-risk CMS updates

The choice between updating and not updating is a false dilemma. Not updating creates security risk. Updating carelessly creates stability risk. The goal is to update safely.

Why updates break things

Updates introduce new code. New code behaves differently from old code. When plugins, themes, or the core CMS expect the old behaviour, conflicts occur.

The risk increases when:

• Updates are infrequent - larger version jumps mean more changes. This is a common pattern in sites that fail after launch

• The site has many plugins - plugin sprawl means more potential conflicts

• Custom code exists - modifications may conflict with core changes

• Testing is skipped - problems are discovered in production

Use a staging environment

Every update should be tested in staging before production. Staging is a copy of the live site where changes can be applied and verified without affecting real users.

Staging must mirror production closely. Same PHP version, same database version, same server configuration. A staging environment that differs significantly from production provides false confidence.

Most managed hosting platforms provide staging as a feature. If yours does not, consider whether your hosting is appropriate.

Test what matters

After applying updates in staging, check:

• Core functionality - forms submit, purchases complete, logins work

• Visual appearance - layouts render correctly, images display

• Performance - page load times have not degraded significantly

• Error logs - no new warnings or errors appearing

Automated testing helps if you have it. Manual testing of critical paths is the minimum.

Have a rollback plan

Before updating production, ensure you can reverse the change. This typically means:

• A recent backup that can be restored quickly

• Knowledge of which files and database tables changed

• Tested restoration process - not just theoretical. This should be part of proper maintenance

The ability to rollback reduces the pressure when problems occur. You can restore service first, then investigate calmly.

Update frequently in small batches

Monthly updates with a few changes are safer than annual updates with dozens. Small batches mean:

• Problems are easier to identify - fewer variables changed

• Rollback is simpler - less to reverse

• Knowledge stays current - you remember how the system works

Schedule updates as routine maintenance, not as emergency responses.

Read release notes

Major updates often announce breaking changes. Reading release notes before updating reveals:

• Deprecated features that your site uses

• New requirements for PHP or database versions

• Known issues with specific plugins or configurations

This advance warning allows preparation rather than reaction.

The process

A reliable update process:

1. Review pending updates and release notes

2. Create a fresh backup of production

3. Apply updates to staging

4. Test critical functionality in staging

5. Fix any issues discovered

6. Apply updates to production during low-traffic period

7. Verify production functionality immediately after

8. Document what was updated

This process takes longer than clicking Update All, but it prevents most problems.

Before your next update, it is worth knowing what you are working with. A site health report flags outdated plugins, abandoned dependencies and anything else that makes updates risky. Delivered in writing within 5 working days. Find out more.