Installer does not show an Upgrade button

I only see the Clean Install button

If you have begun the upgrade process by going to, but you don’t see an Upgrade … button, it means the system can’t recognize your existing database. Look at your includes/configure.php file and check these things:

  • Is the DB_DATABASE the correct name for the database you are importing?
  • Does DB_PREFIX correctly reflect the prefix used on the tables in the database?

See this article for a discussion of the values DB_DATABASE and DB_PREFIX.

When everything is configured correctly, you should see this at the bottom of the screen on the first page of zc_install:

Use the upgrade button!

Still have questions? Use the Search box in the upper right, or try the full list of FAQs. If you can't find it there, head over to the Zen Cart support forum and ask there in the appropriate subforum. In your post, please include your Zen Cart and PHP versions, and a link to your site.

Is there an error or omission on this page? Please post to General Questions on the support forum. Or, if you'd like to open a pull request, just review the guidelines and get started. You can even PR right here.
Last modified March 18, 2024 by Scott Wilson (3db4324).