I don’t think I understand what you are saying. All the instructions I saw said to install WordPRess as a single site and then switch to multiversion. How can I change wp-config.php if it isn’t created yet? Are there different install packages for single and multiversion?
What I did was install xammp and then install WordPress. I created a site in WordPress. Then I switched WordPress to multiversion. It didn’t work. I uninstalled WordPress. I uninstalled xammp. I deleted the xammp folder. Then I re-installed xammp. Then I reinstalled WordPress and immediantly switched it to multiversion. It still doesn’t work.
What can I do to get multiversion to work?