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  1. 1 Find your XenForo, PHP and MySQL versions Three version numbers decide which add-ons you can run. Here is where to find each one, and what XenForo 2.2 a... Beginner Getting Started · 3 min
  2. 2 Back up your forum before installing or updating A backup is the database plus a few folders. How to take one before every install or upgrade, and how to check... Beginner Getting Started · 3 min
  3. 3 Common add-on installation errors and how to fix them The add-on is not in the list, requirements are not met, files have unexpected contents: the errors you are mo... Intermediate Troubleshooting · 4 min
  4. 4 Speed up your XenForo forum The changes that make the biggest difference to a slow forum, from PHP OPcache and a cache server to cron and... Intermediate Advanced Topics · 4 min
  5. 5 XenForo security checklist for forum owners Ten checks that protect your forum: two-step verification for staff, fewer administrators, updates, backups an... Intermediate Advanced Topics · 3 min