Installation

Moving your forum to a new server or domain Advanced Moving is copying the database and files, then updating a handful of settings. The order that avoids downtime, and what to do about your licenses. Advanced Topics · 3 min read · Updated Sep 27, 2026 › Download your add-ons and older versions Beginner Free add-ons download from their product page, premium ones from My Licenses. Where to find each, older versions, and update emails. Licenses & Account · 3 min read · Updated Sep 27, 2026 › How to upgrade an add-on to a new version Beginner Upgrading uses the same zip as installing: overwrite the files, then click Upgrade. Your settings and data stay where they are. Installation · 3 min read · Updated Sep 27, 2026 › Install, upgrade and rebuild add-ons from the command line Intermediate XenForo's cmd.php runs installs and upgrades without browser timeouts. The commands you need, and when to use them. Installation · 3 min read · Updated Sep 27, 2026 › Disable or uninstall an add-on (and what gets deleted) Beginner Disabling switches an add-on off and keeps its data. Uninstalling removes its data for good. When to use each, and how. Installation · 3 min read · Updated Sep 27, 2026 › Add-ons that need another add-on first Beginner Some add-ons build on another one. Install the one they need first, or XenForo will refuse. Which D.C Style add-ons have dependencies. Installation · 3 min read · Updated Sep 27, 2026 › Use the file health check to find missing or changed files Beginner A partly uploaded add-on causes strange errors. The file health check compares every file with what should be there. Troubleshooting · 4 min read · Updated Sep 27, 2026 › Common add-on installation errors and how to fix them Intermediate The add-on is not in the list, requirements are not met, files have unexpected contents: the errors you are most likely to meet when installing, and the fix for... Troubleshooting · 4 min read · Updated Sep 27, 2026 › How to install a XenForo add-on Beginner Install any D.C Style add-on in a few minutes: upload the files and click Install, or install straight from the zip file. Installation · 4 min read · Updated Sep 27, 2026 ›