WordPress 4.0

End of life

4.0.38 Release notes ↗

Is WordPress 4.0 still supported?

No

WordPress 4.0 reached end of life on Dec 18, 2014 (11 years ago). It no longer gets updates, including security fixes. Upgrade to WordPress 7.1 (latest 7.1.3).

Released
Sep 4, 2014
End of life
Dec 18, 2014
11 years ago
Supported phpversions
5.2 - 5.5
Latest version
4.0.38
Nov 30, 2022

Upgrade path

The recommended upgrade is WordPress 7.1, currently at 7.1.3.

Not sure? Run wp core version

How to upgrade from WordPress 4.0 to WordPress 7.1

WP-CLI

wp core update
wp core update-db
wp plugin update --all

Or Dashboard → Updates. Take a backup first, and update plugins and themes too.

Official upgrade guide ↗ Back up first, and test on a non-production machine when you move to a new branch.

Quick answers

Is WordPress 4.0 still supported?
No. WordPress 4.0 reached end of life on Dec 18, 2014 (11 years ago). It no longer gets updates, including security fixes. Upgrade to WordPress 7.1 (latest 7.1.3).
When is WordPress 4.0 end of life?
WordPress 4.0 reached end of life on Dec 18, 2014. It gets no more updates, including security fixes.
What is the latest version of WordPress 4.0?
The latest WordPress 4.0 release is 4.0.38, released on Nov 30, 2022.
When was WordPress 4.0 released?
WordPress 4.0 was released on Sep 4, 2014.
What should I upgrade WordPress 4.0 to?
The recommended upgrade is WordPress 7.1, currently at 7.1.3.
How do I check which WordPress version I have?
Run wp core version, then paste the result into the “Am I up to date?” box on this page.

Other WordPress branches

All 36 →
  • 4.6 End of life
  • 4.5 End of life
  • 4.4 End of life
  • 4.3 End of life
  • 4.2 End of life
  • 4.1 End of life
  • 4.0 End of life
  • 3.9 End of life
  • 3.8 End of life
  • 3.7 End of life
  • 3.6 End of life

← WordPress 3.9 WordPress 4.1 →

WordPress 4.0 release history

RSS

Release dates for 39 WordPress 4.0 versions, newest first.

  1. 4.0.38
  2. 4.0.37
  3. 4.0.36
  4. 4.0.35
  5. 4.0.34
  6. 4.0.33
  7. 4.0.32
  8. 4.0.31
  9. 4.0.30
  10. 4.0.29
All 39 releases
  1. 4.0.28
  2. 4.0.27
  3. 4.0.26
  4. 4.0.25
  5. 4.0.24
  6. 4.0.23
  7. 4.0.22
  8. 4.0.21
  9. 4.0.20
  10. 4.0.19
  11. 4.0.18
  12. 4.0.17
  13. 4.0.16
  14. 4.0.15
  15. 4.0.14
  16. 4.0.13
  17. 4.0.12
  18. 4.0.11
  19. 4.0.10
  20. 4.0.9
  21. 4.0.8
  22. 4.0.7
  23. 4.0.6
  24. 4.0.5
  25. 4.0.4
  26. 4.0.3
  27. 4.0.2
  28. 4.0.1
  29. 4.0

Keep track

WordPress 4.0 latest version badge

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