Upgrading from ProcessWire 2.x

If upgrading from ProcessWire 2.5 or older, we recommend that you upgrade to ProcessWire 2.7 first. That version includes details in its README file on how to upgrade from that older version of ProcessWire. To upgrade from ProcessWire 2.6 (or newer) to ProcessWire 3.x, please follow the instructions below.

  1. Login to the admin of your site.

  2. Edit your /site/config.php file and set $config->debug = true; to ensure you can see error messages. This is optional but recommended.

  3. Replace your /wire/ directory and /index.php file with the new ones from here.

  4. Click a navigation link in your admin, such as "Pages". You may notice a delay. This is ProcessWire compiling 3rd party modules into a format that is compatible with version 3.x. Keep an eye out for any error messages. If you see any issues, it's possible you may need to upgrade one or more 3rd party modules. If you see messages about it applying updates, keep hitting reload in your browser until you no longer see any update messages.

  5. Once you've resolved error messages in your admin, you'll want to test out the front end of your site. Again, expect a delay while ProcessWire compiles any files to make them compatible with 3.x. Depending on your template file strategy, updates may or may not be necessary. If you run into any pages that aren't working, see the section further down on troubleshooting. Thoroughly test every aspect if your site to ensure that everything is working as you expect.

  6. When you've confirmed a successful upgrade, remember to restore the $config->debug setting back to false in your /site/config.php file.

If you run into any trouble upgrading, please see our troubleshooting upgrades guide.

Twitter updates

  • ProcessWire 3.0.192 (dev branch) contains 11 issue fixes and 5 pull requests, over 20 commits— More
    7 January 2022
  • ProcessWire 3.0.191 core updates: updates to the installer and the profile exporter module— More
    24 December 2021
  • This week ProcessWire went on a diet, trimming the core size from 15.5 MB down to 7.5 MB by moving optional site profiles into their own GitHub repos— More
    17 December 2021

Latest news

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    ProcessWire 3.0.190 has 15 commits relative to 3.0.189 and contains a mixture of issue resolutions and feature additions. This post covers them all, in addition to updates for the PageAutosave and ProFields Table modules.
    Blog / 3 December 2021
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“To Drupal, or to ProcessWire? The million dollar choice. We decided to make an early switch to PW. And in retrospect, ProcessWire was probably the best decision we made. Thanks are due to ProcessWire and the amazing system and set of modules that are in place.” —Unni Krishnan, Founder of PigtailPundits