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Release notes

Maintenance release of the Drupal 7 series. Includes a variety of improvements and bug fixes (no major, non-backwards-compatible new functionality).

No security fixes are included in this release.

No changes have been made to the web.config, robots.txt or default settings.php files in this release, so upgrading custom versions of those files is not necessary.

There are two changes to the .htaccess file in this release:

  • A change to support services such as Let's Encrypt by making Drupal not block the .well-known directory defined by RFC 5785 (see #2847325).
  • A change to allow Drupal sites to work correctly on Apache 2.4 when the mod_access_compat Apache module is disabled (see #1599774).

Upgrading custom versions of .htaccess to incorporate these changes is recommended, but not required.

Known issues:

There is one known regression in this release:

  • The change to .htaccess to support RFC 5785 (described above) breaks sites that are running on extremely old versions of the Apache web server, such as Apache 1.3. Upgrading to a supported version of Apache is recommended, but if necessary you can instead reverse the relevant .htaccess changes as a workaround. See #2887772: Drupal 7.55 .htaccess breaks Apache versions older than 2.0 for details.

Major changes since 7.54:

  • #2877243: Fixed incompatibility with PHP versions 7.0.19 and 7.1.5 due to duplicate DATE_RFC7231 definition.
  • #2847325: Allowed services such as Let's Encrypt to work with Drupal on Apache, by making Drupal's .htaccess file allow access to the .well-known directory defined by RFC 5785.
  • #1599774: Made new Drupal sites work correctly on Apache 2.4 when the mod_access_compat Apache module is disabled.
  • #2289867: Fixed Drupal's URL-generating functions to always encode '[' and ']' so that the URLs will pass HTML5 validation.
  • Made Drupal core pass all automated tests on PHP 7.1.

All changes since 7.54:

Download Size md5 hash
drupal-7.55.tar.gz 3.13 MB ad97f8c86cee7be9d6ab13724b55fa1c 3.62 MB 2e8454e3a4eb8068b1134c52ecae9583
Last updated: 7 Jun 2017 at 22:19 UTC
Official release from tag: 
Core compatibility: 
Release type: 
Short Description: 
If you need stability and features from the widest variety of contributed modules and themes, this is the version for you.
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