How to Update WordPress Without Breaking Your Site

· 6 min read
Hands typing on a laptop with a WordPress editor open

There are two ways to get WordPress updates wrong. The first is never updating, which is how most sites end up compromised — outdated plugins are the most common way in. The second is clicking “Update all” on a Friday afternoon and discovering on Monday that checkout has been broken all weekend.

The fix isn’t complicated. It’s a routine.

What actually gets updated

  • WordPress core — minor releases (6.x.1, 6.x.2) are security and bug fixes and apply automatically by default. Major releases (6.x → 6.y) add features and deserve a bit more care.
  • Plugins — the biggest source of both vulnerabilities and breakage. Each one is written by a different developer on a different schedule.
  • Themes — especially if you’ve edited the theme’s files directly (in which case an update will overwrite your changes; use a child theme).
  • PHP — the language WordPress runs on. Covered separately in which PHP version WordPress should run.

A routine that works

1. Pick a time, not a moment. Once a week or every two weeks, at a low-traffic time when someone can check the site afterwards. Not right before a weekend, a launch or a sale.

2. Make sure there’s a fresh backup. Confirm a backup exists from today, or take one. On WordPress, a restore is the undo button. Without it, there’s no undo.

3. Read before you click. Look at the list of pending updates. Is any of them a major version jump (2.x → 3.0)? Does the changelog mention “breaking changes” or a minimum PHP version? Those are the ones to do on their own, not in a batch.

4. Update in small groups. Minor plugin updates can go together. Major updates, page builders, e-commerce plugins (WooCommerce and its extensions) and anything that touches checkout or forms go one at a time, so if something breaks you know exactly which update did it.

5. Check the site right away. Not just the homepage. Open:

  • a regular page and a blog post
  • your contact form (send a test)
  • the cart and checkout, if you have a store
  • the admin dashboard

6. Clear the cache. If the site looks wrong after an update, purge the LiteSpeed Cache before assuming something broke. Old cached CSS against new HTML is a common false alarm.

Use staging for the risky ones

A staging site is a private copy of your site where you can run an update first and see what happens. For stores, membership sites, or anything that makes money directly, testing major updates on staging before production is worth the extra ten minutes.

Should you turn on auto-updates?

For minor core releases, yes — that’s already the default, and it’s the right default. For plugins, it depends on the plugin. Auto-updates are reasonable for small, well-maintained plugins with a good track record. Leave them off for your page builder, your e-commerce stack, and anything heavily customized. Those get a human.

If an update breaks something

  1. Don’t panic and don’t start changing other things. One variable at a time.
  2. Deactivate the plugin you just updated. If the admin is unreachable, rename its folder in wp-content/plugins via the file manager — WordPress will deactivate it.
  3. Check the error log. A “critical error” message usually comes with an email to the admin address explaining which plugin caused it.
  4. Restore if needed. If the site matters more than figuring out the cause right now, restore the backup from before the update and investigate after.

Delete what you don’t use

Every plugin you keep is one more thing to update. Deactivated plugins still need updating, because their files are still on the server. The easiest update is the one you no longer need to do.

Where hosting helps

A good host makes this routine safer without doing it for you: frequent backups, an easy restore, the PHP version you need, and a firewall that buys time when a vulnerability is disclosed before the plugin author ships a fix. That’s the shared-responsibility line in practice.

Frequently asked questions

How often should I update WordPress plugins?

Check weekly. Security updates should go out within days; feature updates can wait for your regular slot.

Is it safe to update everything at once?

For a handful of minor updates on a simple site, usually. For a store or a site with many plugins, update the important ones one by one so you can tell what caused any problem.

Will updating WordPress delete my content?

No. Updates replace software files, not your posts, pages, media or settings. Edits made directly to a theme’s files are the exception.

Want a hosting team you can open a ticket with when an update goes wrong? Get started with UNITY.

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